Liberty User Guide

Volume 2

Version 2007.03, March 2007

Liberty User Guide, Volume 2, Version 2007.03 ii

information that is the property of Synopsys, Inc. The software and documentation are furnished under a license

agreement and may be used or copied only in accordance with the terms of the license agreement. No part of the

software and documentation may be reproduced, transmitted, or translated, in any form or by any means, electronic,

mechanical, manual, optical, or otherwise, without prior written permission of Synopsys, Inc., or as expressly provided

by the license agreement.

Right to Copy Documentation

The license agreement with Synopsys permits licensee to make copies of the documentation for its internal use only.

Each copy shall include all copyrights, trademarks, service marks, and proprietary rights notices, if any. Licensee must

assign sequential numbers to all copies. These copies shall contain the following legend on the cover page:

This document is duplicated with the permission of Synopsys, Inc., for the use of Open Source Liberty users.

Destination Control Statement

All technical data contained in this publication is subject to the export control laws of the United States of America.

Disclosure to nationals of other countries contrary to United States law is prohibited. It is the reader's responsibility to

determine the applicable regulations and to comply with them.

Disclaimer

SYNOPSYS, INC., AND ITS LICENSORS MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH

REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Trademarks

Synopsys and certain Synopsys product names are trademarks of Synopsys, as set forth at

http://www.synopsys.com/Company/Pages/Trademarks.aspx.

All other product or company names may be trademarks of their respective owners.

Third-Party Links

Any links to third-party websites included in this document are for your convenience only. Synopsys does not endorse

and is not responsible for such websites and their practices, including privacy practices, availability, and content.

Synopsys, Inc.

690 E. Middlefield Road

Mountain View, CA 94043

www.synopsys.com

iii

Contents

1. Physical Library Group Description and Syntax

Attributes and Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

phys_library Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

bus_naming_style Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

capacitance_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . 1-19

capacitance_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

comment Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

current_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . 1-20

current_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

date Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

dist_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

distance_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

frequency_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . 1-22

frequency_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

has_wire_extension Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

inductance_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . 1-23

inductance_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

is_incremental_library Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

manufacturing_grid Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

power_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

power_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

resistance_conversion_factor Simple Attribute. . . . . . . . . . . . . . . . . . . . . . 1-25

resistance_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

revision Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

SiO2_dielectric_constant Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

time_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

time_unit Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

voltage_conversion_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . 1-28

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voltage_unit Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

antenna_lut_template Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29

resistance_lut_template Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30

shrinkage_lut_template Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32

spacing_lut_template Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

wire_lut_template Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

2. Specifying Attributes in the resource Group

Syntax for Attributes in the resource Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

resource Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

contact_layer Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

device_layer Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

overlap_layer Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

substrate_layer Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

3. Specifying Groups in the resource Group

Syntax for Groups in the resource Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

array Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

floorplan Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

cont_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

corner_min_spacing Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

max_stack_level Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

spacing Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

enclosed_cut_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

max_current_ac_absavg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

max_current_ac_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

max_current_ac_peak Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

max_current_ac_rms Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

max_current_dc_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

implant_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

min_width Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

spacing Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

spacing_from_layer Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

ndiff_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

max_current_ac_absavg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

max_current_ac_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

max_current_ac_peak Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

max_current_ac_rms Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

max_current_dc_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

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pdiff_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25

max_current_ac_absavg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25

max_current_ac_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25

max_current_ac_peak Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26

max_current_ac_rms Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

max_current_dc_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

poly_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

avg_lateral_oxide_permittivity Simple Attribute . . . . . . . . . . . . . . . . . . . . . 3-29

avg_lateral_oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . 3-29

height Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

oxide_permittivity Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

res_per_sq Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

shrinkage Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

conformal_lateral_oxide Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . 3-33

lateral_oxide Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

max_current_ac_absavg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34

max_current_ac_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

max_current_ac_peak Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

max_current_ac_rms Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

max_current_dc_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

routing_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

avg_lateral_oxide_permittivity Simple Attribute . . . . . . . . . . . . . . . . . . . . . 3-39

avg_lateral_oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . 3-39

baseline_temperature Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40

cap_multiplier Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40

cap_per_sq Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41

coupling_cap Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41

default_routing_width Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42

edgecapacitance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42

field_oxide_permittivity Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43

field_oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43

fill_active_spacing Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-44

fringe_cap Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-44

height Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45

inductance_per_dist Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45

max_current_density Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45

max_length Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46

max_observed_spacing_ratio_for_lpe Simple Attribute . . . . . . . . . . . . . . . 3-46

max_width Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47

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min_area Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47

min_enclosed_area Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48

min_enclosed_width Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48

min_fat_wire_width Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49

min_fat_via_width Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49

min_length Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50

min_width Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50

min_wire_split_width Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51

offset Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51

oxide_permittivity Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52

oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52

pitch Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53

process_scale_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53

res_per_sq Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54

res_temperature_coefficient Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . 3-54

routing_direction Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54

same_net_min_spacing Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55

shrinkage Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55

spacing Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-56

thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57

u_shaped_wire_spacing Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . 3-57

wire_extension Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57

wire_extension_range_check_connect_only

Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-58

wire_extension_range_check_corner

Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-58

conformal_lateral_oxide Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . 3-59

lateral_oxide Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-60

min_extension_width Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-60

min_shape_edge Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-61

plate_cap Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-61

ranged_spacing Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62

spacing_check_style Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-63

stub_spacing Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-63

end_of_line_spacing_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-64

extension_via_rule Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-67

max_current_ac_absavg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-70

max_current_ac_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71

max_current_ac_peak Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71

max_current_ac_rms Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-72

max_current_dc_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73

min_edge_rule Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73

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min_enclosed_area_table Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-76

notch_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-77

resistance_table Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-79

shrinkage_table Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-80

spacing_table Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-81

wire_extension_range_table Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-82

routing_wire_model Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-83

wire_length_x Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-84

wire_length_y Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-85

adjacent_wire_ratio Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-85

overlap_wire_ratio Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-86

wire_ratio_x Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-87

wire_ratio_y Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-87

site Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-88

on_tile Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-89

site_class Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-89

symmetry Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-89

size Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-90

tile Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-91

tile_class Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-91

size Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-92

via Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-92

capacitance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-93

inductance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-93

is_default Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-94

is_fat_via Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-94

resistance Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-95

res_temperature_coefficient Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . 3-95

top_of_stack_only Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-96

via_id Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-96

foreign Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-97

via_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-99

via_array_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-104

4. Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group . . . . . . . . . . . . . . . . . . 4-2

topological_design_rules Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

antenna_inout_threshold Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

antenna_input_threshold Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

antenna_output_threshold Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . 4-3

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min_enclosed_area_table_surrounding_metal

Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

contact_min_spacing Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

corner_min_spacing Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

end_of_line_enclosure Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

min_enclosure Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

diff_net_min_spacing Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

min_generated_via_size Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . 4-7

min_overhang Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

same_net_min_spacing Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . 4-8

5. Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group . . . . . . . . . . . . . . . . . . . . 5-2

antenna_rule Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

adjusted_gate_area_calculation_method

Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

adjusted_metal_area_calculation_method

Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

antenna_accumulation_calculation_method

Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

antenna_ratio_calculation_method Simple Attribute . . . . . . . . . . . . . . . . . 5-4

apply_to Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

geometry_calculation_method Simple Attribute . . . . . . . . . . . . . . . . . . . . . 5-5

metal_area_scaling_factor_calculation_method

Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

pin_calculation_method Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

routing_layer_calculation_method Simple Attribute . . . . . . . . . . . . . . . . . . 5-7

layer_antenna_factor Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

adjusted_gate_area Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

adjusted_metal_area Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

antenna_ratio Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

metal_area_scaling_factor Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

default_via_generate Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

density_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

extension_wire_spacing_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

extension_wire_qualifier Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

min_total_projection_length_qualifier Group . . . . . . . . . . . . . . . . . . . . . . . 5-17

spacing_check_qualifier Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

stack_via_max_current Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

bottom_routing_layer Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

top_routing_layer Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

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max_current_ac_absavg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

max_current_ac_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

max_current_ac_peak Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

max_current_ac_rms Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

max_current_dc_avg Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

via_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

via_list Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

routing_layer_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

via_rule_generate Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

capacitance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

inductance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

resistance Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

res_temperature_coefficient Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . 5-33

contact_formula Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33

routing_formula Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

wire_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42

layer_rule Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42

via Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45

wire_slotting_rule Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52

max_metal_density Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52

min_length Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-53

min_width Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-53

slot_length_range Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-54

slot_length_side_clearance Complex Attribute. . . . . . . . . . . . . . . . . . . . . . 5-54

slot_length_wise_spacing Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . 5-54

slot_width_range Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-55

slot_width_side_clearance Complex Attribute . . . . . . . . . . . . . . . . . . . . . . 5-55

slot_width_wise_spacing Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . 5-56

6. Specifying Attributes and Groups in the process_resource Group

Syntax for Attributes in the process_resource Group . . . . . . . . . . . . . . . . . . . . . . . . 6-2

baseline_temperature Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

field_oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

process_scale_factor Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

plate_cap Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Syntax for Groups in the process_resource Group. . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

process_cont_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

process_routing_layer Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

cap_multiplier Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

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cap_per_sq Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

coupling_cap Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

edgecapacitance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

fringe_cap Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

height Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

inductance_per_dist Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

lateral_oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

oxide_thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

res_per_sq Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

shrinkage Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

thickness Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

conformal_lateral_oxide Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . 6-11

lateral_oxide Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

resistance_table Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

shrinkage_table Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

process_via Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

capacitance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

inductance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

resistance Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

res_temperature_coefficient Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . 6-16

process_via_rule_generate Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

capacitance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

inductance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

resistance Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

res_temperature_coefficient Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . 6-19

process_wire_rule Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

process_via Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20

7. Specifying Attributes and Groups in the macro Group

macro Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

cell_type Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

create_full_pin_geometry Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

eq_cell Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

extract_via_region_within_pin_area Simple Attribute . . . . . . . . . . . . . . . . . . . . 7-5

in_site Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

in_tile Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

leq_cell Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

source Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

symmetry Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

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extract_via_region_from_cont_layer Complex Attribute . . . . . . . . . . . . . . . . . . 7-8

obs_clip_box Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

origin Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

size Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

foreign Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

orientation Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

origin Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

obs Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

via Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

via_iterate Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

geometry Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

site_array Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

orientation Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

iterate Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

origin Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24

8. Specifying Attributes and Groups in the pin Group

pin Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

capacitance Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

direction Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

eq_pin Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

must_join Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

pin_shape Simple Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

pin_type Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

antenna_contact_accum_area Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . 8-6

antenna_contact_accum_side_area Complex Attribute . . . . . . . . . . . . . . . . . . 8-6

antenna_contact_area Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

antenna_contact_area_partial_ratio Complex Attribute. . . . . . . . . . . . . . . . . . . 8-7

antenna_contact_side_area Complex Attribute. . . . . . . . . . . . . . . . . . . . . . . . . 8-8

antenna_contact_side_area_partial_ratio

Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

antenna_diffusion_area Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

antenna_gate_area Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

antenna_metal_accum_area Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . 8-10

antenna_metal_accum_side_area Complex Attribute . . . . . . . . . . . . . . . . . . . . 8-10

antenna_metal_area Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

antenna_metal_area_partial_ratio Complex Attribute . . . . . . . . . . . . . . . . . . . . 8-11

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antenna_metal_side_area Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

antenna_metal_side_area_partial_ratio

Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

foreign Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

orientation Simple Attribute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

origin Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14

port Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15

via Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15

via_iterate Complex Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16

geometry Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17

9. Developing a Physical Library

Creating the Physical Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Naming the Source File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Naming the Physical Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Defining the Units of Measure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

10. Defining the Process and Design Parameters

Defining the Technology Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Defining the Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Defining the Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Contact Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

Overlap Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

Routing Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

Specifying Net Spacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

Device Layer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Defining Vias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Naming the Via . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Defining the Via Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7

Defining the Geometry for Simple Vias. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7

Defining the Geometry for Special Vias . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8

Referencing a Foreign Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10

Defining the Placement Sites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10

Standard Cell Technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10

Gate Array Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12

11. Defining the Design Rules

Defining the Design Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

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Defining Minimum Via Spacing Rules in the Same Net . . . . . . . . . . . . . . . . . . . 11-2

Defining Same-Net Minimum Wire Spacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

Defining Same-Net Stacking Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

Defining Nondefault Rules for Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

Defining Rules for Selecting Vias for Special Wiring . . . . . . . . . . . . . . . . . . . . . 11-5

Defining Rules for Generating Vias for Special Wiring . . . . . . . . . . . . . . . . . . . 11-6

Defining the Generated Via Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8

Appendix A. Parasitic RC Estimation in the Physical Library

Modeling Parasitic RC Estimation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Variables Used in Parasitic RC Estimation . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Variables for Routing Layers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Variables for Estimated Routing Wire Model . . . . . . . . . . . . . . . . . . . . . . . A-3

Equations for Parasitic RC Estimation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Capacitance per Unit Length for a Layer . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Resistance and Capacitance for Each Routing Direction . . . . . . . . . . . . . . A-5

.plib Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

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1-1

Physical Library Group Description and Syntax1

This chapter describes the role of the phys_library group in defining a physical library.

The information in this chapter includes a description and syntax example for the attributes

that you can define within the

phys_library group.

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Attributes and Groups

The phys_library group is the superior group in the physical library. The phys_library

group contains all the groups and attributes that define the physical library.

Example 1-1 lists the attributes and groups that you can define within a physical library.

The following chapters include descriptions and syntax examples for the groups that you can

define within the

phys_library group.

Example 1-1 Syntax for the Attributes and Groups in the Physical Library

phys_library(library_name

) {

bus_naming_style: string ;

capacitance_conversion_factor : integer ;

capacitance_unit : 1pf | 1ff | 10ff | 100ff ;

comment : string ;

current_conversion_factor : integer ;

current_unit : 100uA | 100mA | 1A | 1uA | 10uA | 1mA | 10mA ;

date : string ;

dist_conversion_factor : integer ;

distance_unit : 1mm | 1um ;

frequency_conversion_factor : integer ;

frequency_unit : 1mhz ;

gds2_conversion_factor : integer ;

has_wire_extension: Boolean ;

inductance_conversion_factor : integer ;

inductance_unit : 1fh | 1ph | 1nh | 1uh | 1mh | 1h ;

is_incremental_library : Boolean ;

manufacturing_grid : float ;

power_conversion_factor : integer ;

power_unit : 1uw | 10uw | 100uw | 1mw | 10mw | 100mw | 1w ;

resistance_conversion_factor : integer ;

resistance_unit : 1ohm | 100ohm | 10ohm | 1kohm ;

revision : string ;

Si02_dielectric_constant : float ;

time_conversion_factor : integer ;

time_unit : 1ns | 100 ps | 10ps | 1ps ;

voltage_conversion_factor : integer ;

voltage_unit : 1mv | 10mv | 100mv | 1v ;

antenna_lut_template (template_name

) {

variable_1 : antenna_diffusion_area ;

index_1("float, float, float, ...") ;

} /* end antenna_lut_template */

resistance_lut_template (template_name

) {

variable_1: routing_width | routing_spacing ;

variable_2: routing_width | routing_spacing ;

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

} /* end resistance_lut_template */

shrinkage_lut_template (template_name

) {

variable_1: routing_width | routing_spacing ;

variable_2: routing_width | routing_spacing ;

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

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} /* end shrinkage_lut_template */

spacing_lut_template (template_name

) {

variable_1: routing_width ;

variable_2: routing_width ; routing_length ;

variable_3: routing_length ;

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

} /* end *spacing_lut_template */

wire_lut_template (template_name

) {

variable_1: extension_width |extension_length | bottom_routing_width |

top_routing_width |routing_spacing | routing_width ;

variable_2: extension_width |extension_length | bottom_routing_width |

top_routing_width |routing_spacing | routing_width ;

variable_3: extension_width |extension_length | routing_spacing |

routing_width ;

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

} /* end wire_lut_template */

resource(architecture

enum

) {

contact_layer(layer_name

) ;

device_layer(layer_name

) ;

overlap_layer(layer_name

) ;

substrate_layer(layer_name

) ;

cont_layer (layer_name

) {

corner_min_spacing : float ;

max_current_density ;float ;

max_stack_level ;integer ;

spacing : float ;

enclosed_cut_rule () {

max_cuts : integer ;

max_neighbor_cut_spacing : float ;

min_cuts : integer ;

min_enclosed_cut_spacing : float ;

min_neighbor_cut_spacing : float ;

} /* end enclosed_cut_rule */

max_current_ac_absavg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_peak (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_rms (template_name

) {

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index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_dc_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

} /* end cont_layer */

extension_via_rule () {

related_layer : name

;

min_cuts_table ( wire_lut_template_name ) {

index_1

index_2

values

} * end min_cuts_table */

reference_cut_table ( via_array_lut_template_name ) {

index_1

index_2

values

} /* end reference_cut_table */

} /* end extension_via_rule */

implant_layer () {

min_width : float ;

spacing ; float ;

spacing_from_layer (float, layer_name

) ;

} /* end implant_layer */

ndiff_layer () {

max_current_ac_absavg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_peak (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_rms (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_dc_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

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values ("float, float, float, ...") ;

}

} /*end ndiff_layer */

pdiff_layer () {

max_current_ac_absavg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_peak (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_rms (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_dc_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

} /*end pdiff_layer */

poly_layer(layer_name

)) {

avg_lateral_oxide_permittivity : float ;

avg_lateral_oxide_thickness : float ;

conformal_lateral_oxide (thickness

float

, topwall_thickness

float

sidewall_thickness

float

, permittivity

float

) ;

height : float ;

lateral_oxide : (thickness

float

, permittivity

float

) ;

oxide_permittivity : float ;

oxide_thickness : float ;

res_per_sq : float ;

shrinkage : float ;

thickness : float ;

max_current_ac_absavg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

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values ("float, float, float, ...") ;

}

max_current_ac_peak (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_rms (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_dc_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

} /* end poly_layer */

routing_layer(layer_name

)) {

avg_lateral_oxide_permittivity

avg_lateral_oxide_thickness

baseline_temperature : float ;

cap_multiplier : float ;

cap_per_sq : float ;

conformal_lateral_oxide (thickness

float

, topwall_thickness

float

sidewall_thickness

float

, permittivity

float

) ;

coupling_cap : float ;

default_routing_width : float ;

edgecapacitance : float ;

field_oxide_permittivity : float ;

field_oxide_thickness : float ;

fill_active_spacing : float ;

fringe_cap : float ;

height : float ;

inductance_per_dist : float ;

lateral_oxide : (thickness

float

, permittivity

float

) ;

max_current_density : float ;

max_length : float ;

max_observed_spacing_ratio_for_lpe : float ;

max_width : float ;

min_area : float ;

min_enclosed_area : float ;

min_enclosed_width : float ;

min_extension_width ; ;

min_fat_wire_width : float ;

min_fat_via_width : float ;

min_length : float ;

min_shape_edge (float, integer, Boolean ) ;

min_width : float ;

min_wire_split_width : float ;

offset : float ;

oxide_permittivity : float ;

oxide_thickness : float ;

pitch : float ;

plate_cap(float, ..., float) ;

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process_scale_factor : float ;

ranged_spacing(float, float, float) ;

res_per_sq : float ;

res_temperature_coefficient : float ;

routing_direction : vertical | horizontal ;

same_net_min_spacing : float ;

shrinkage : float ;

spacing : float ;

spacing_check_style : manhattan | diagonal ;

stub_spacing (spacing

float

, max_length_threshold

float

);

thickness : float ;

u_shaped_wire_spacing : float ;

wire_extension : float ;

wire_extension_range_check_connect_only : Boolean ;

wire_extension_range_check_connect_corner : Boolean ;

array(array_name) {

floorplan(floorplan_name

) {

/* floorplan_name is optional */

/* when omitted, results in default floorplan */

site_array(site_name

) {

iterate(num_x

int

, num_y

int

, spacing_x

float

spacing_y

float

) ;

orientation : FE | FN | E | FS | FW | N | S | W ;

origin(x

float

, y

float

) ;

placement_rule : regular | can_place | cannot_occupy ;

} /* end site_array */

} /* end floorplan */

routing_grid () {

grid_pattern (float, integer, float) ;

routing_direction : horizontal | vertical ;

} /* end routing_grid */

tracks() {

layers : "layer1_name

, ..., layern_name

" ;

routing_direction : horizontal | vertical ;

track_pattern(float, integer, float) ;

/* starting coordinate, number, spacing */

} /*end tracks */

} /* end array */

end_of_line_spacing_rule () {

end_of_line_corner_keepout_width : float ;

end_of_line_edge_checking : value

enum

;

end_of_line_metal_max_width : float ;

end_of_line_min_spacing : float ;

}

max_current_ac_absavg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

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max_current_ac_peak (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_rms (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_dc_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

min_edge_rule () {

concave_corner_required : Boolean ;

max_number_of_min_edges : value

int

;

max_total_edge_length : float ;

min_edge_length : float ;

}

min_enclosed_area_table () {

index_1 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

notch_rule () {

min_notch_edge_length : float ;

min_notch_width : float ;

min_wire_width : float ;

}

resistance_table (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

} /* end resistance_table */

shrinkage_table (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

} /* end shrinkage_table */

spacing_table (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

} /* end spacing_table */

wire_extension_range_table (template_name

) {

index_1 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

} /* end wire_extension_range_table */

} /* end routing_layer */

routing_wire_model(model_name

) {

adjacent_wire_ratio(float, ..., float) ;

overlap_wire_ratio(float, ..., float) ;

wire_length_x(float) ;

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wire_length_y(float) ;

wire_ratio_x(float, ..., float) ;

wire_ratio_y(float, ..., float) ;

} /* end routing_wire_model */

site(site_name

) {

on_tile : value

;

site_class : pad | core ; /* default = core */

size(size_x

float

, size_y

float

) ;

symmetry : x | y | r | xy | rxy ; /* default = none */

} /* end site */

tile (tile name) {

size (float, float) ;

tile_class : pad | core ; /* default = core */

}

via(via_name

) {

capacitance : float ;

inductance : float ;

is_default : Boolean ;

is_fat_via : Boolean ;

res_temperature_coefficient : float ;

resistance : float ; /* per contact-cut rectangle */

same_net_min_spacing(layer_name

, layer_name

, spacing_value

float

is_stack

Boolean

) ;

top_of_stack_only : Boolean ;

via_id : value

int

;

foreign(foreign_object_name

) {

orientation : FE | FN | E | FS | FW | N | S | W ;

origin(x

float

, y

float

) ;

} /* end foreign */

via_layer(layer_name

) {

contact_array_spacing ( float, float ) ;

contact_spacing ( float, float ) ;

enclosure ( float, float ) ;

max_cuts ( value

int

, value

int

) ;

max_wire_width : float ;

min_cuts ( integer , integer ) ;

min_wire_width ; float ;

rectangle(X0

float

, Y0

float

, X1

float

, Y1

float

) ;

/* 1 or more rectangle attributes allowed */ ;

rectangle_iterate ( value

int

, value

int

, float, float, float,

float,float,float ) ;

} /* end via_layer */

} /* end via */

via_array_rule () {

min_cuts_table ( via_array_lut_template_name ) {

index_1

index_2

values

} * end min_cuts_table */

reference_cut_table ( via_array_lut_template_name ) {

index_1

index_2

values

} /* end reference_cut_table */

} /* end via_array_rules */

} /*end resource */

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topological_design_rules() {

antenna_inout_threshold : float ;

antenna_input_threshold : float ;

antenna_output_threshold : float ;

contact_min_spacing(layer_name

, layer_name

, float) ;

corner_min_spacing (value

, value

, float ) ;

diff_net_min_spacing (value

, value

, float ) ;

end_of_line_enclosure (value

, value

, float ) ;

min_enclosure (value

, value

, float ) ;

min_enclosed_area_table_surrounding_metal : value

enum

;

min_generated_via_size(float, float) ; /* x, y */

min_overhang (layer1

string

, layer2

string

, spacing_value

float

) ;

same_net_min_spacing(layer_name

, layer_name

, spacing_value

float

is_stack

Boolean

) ;

antenna_rule (antenna_rule_name

) {

adjusted_gate_area_calculation_method () ;

adjusted_metal_area_calculation_method () ;

antenna_accumulation_calculation_method () ;

antenna_ratio_calculation_method () ;

apply_to : gate_area | gate_perimeter | diffusion_area ;

geometry_calculation_method : all_geometries | connected_only ;

layer_antenna_factor (layer_name

string

, antenna_factor

float

) ;

metal_area_scaling_factor_calculation_method : value

enum

;

pin_calculation_method : all_pins | each_pin ;

routing_layer_calculation_method : side_wall_area | top_area |

side_wall_and_top_area | segment_length | segment_perimeter ;

adjusted_gate_area () {

index_1

values

}

adjusted_metal_area () {

index_1

values

}

antenna_ratio (template_name

) {

index_1 (float,float,float,...)

values (float,float,float,...)

}

metal_area_scaling_factor () {

index_1 (float,float,float,...)

values (float,float,float,...)

}

} /* end antenna_rule */

default_via_generate () {

via_routing_layer() {}

via_contact_layer () {}

}

density_rule () {

check_window_size () ;

check_step : ;

density_range () ;

}

extension_wire_spacing_rule () {

extension_wire_qualifier () {

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connected_to_fat_wire : Boolean ;

corner_wire : Boolean ;

not_connected_to_fat_wire : Boolean ;

} /* end extension_wire_spacing_rule */

min_total_projection_length_qualifier () {

non_overlapping_projection : Boolean ;

overlapping_projection : Boolean ;

parallel_length : Boolean ;

} /* end min_total_projection_length_qualifier */

spacing_check_qualifier () {

corner_to_corner : Boolean ;

non_overlapping_projection_wires : Boolean ;

overlapping_projection_wires : Boolean ;

wires_to_check : value

enum

;

} /* end spacing_check_qualifier */

} /* end extension_wire_spacing_rule */

stack_via_max_current () {

bottom_routing_layer : routing_layer_name

;

top_routing_layer : routing_layer_name

;

max_current_ac_absavg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_peak (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_ac_rms (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

index_3 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

max_current_dc_avg (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

}

} /* end stack_via_max_current */

via_rule(via_rule_name

) {

routing_layer_rule(layer_name

) { /* 2 or more */

contact_overhang : float ;

max_wire_width : float ;

metal_overhang : float ;

min_wire_width : float ;

routing_direction : horizontal | vertical ;

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via_list : ;

} /* end routing_layer_rule */

vias : "via_name1

, ...,via_nameN

," ;

} /* end via_rule */

via_rule_generate(via_rule_generate_name

) {

capacitance : float ;

inductance : float ;

res_temperature_coefficient : float ;

resistance : float ;

routing_formula(layer_name

) {

contact_overhang : float ;

enclosure ( float, float );

max_wire_width : float ;

metal_overhang : float ;

min_wire_width : float ;

routing_direction : horizontal | vertical ;

} /* end routing_formula */

contact_formula(layer_name

) {

contact_array_spacing ( float, float ) ;

contact_spacing(X

float

, Y

float

) ;

max_cuts ( value

int

, value

int

) ;

max_cut_rows_current_direction : float ;

min_number_of_cuts : float ;

rectangle(X0

float

, Y0

float

, X1

float

, Y1

float

) ;

resistance : float ;

routing_direction : value

enum

;

} /* end contact_formula */

} /* end via_rule_generate */

wire_rule(wire_rule_name

) {

via(via_name

) {

capacitance : float ;

inductance : float ;

res_temperature_coefficient : float ;

resistance : float ;

same_net_min_spacing(layer_name

, layer_name

, spacing_value

float

is_stack

Boolean

) ;

foreign(foreign_object_name

) {

orientation : FE | FN | E | FS | FW | N | S | W ;

origin(float, float) ;

} /* end foreign */

via_layer(layer_name

) {

contact_array_spacing ( float, float ) ;

enclosure ( float, float ) ;

max_cuts ( value

int

, value

int

) ;

rectangle(X0

float

, Y0

float

, X1

float

, Y1

float

) ;

/* 1 or more rectangles */

} /* end via_layer */

} /* end via */

layer_rule(layer_name

) {

min_spacing : float ;

same_net_min_spacing(layer_name

, layer_name

, spacing_value

float

is_stack

Boolean

) ;

/* layer1, layer2, spacing, is_stack */

wire_extension : float ;

wire_width : float ;

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} /* end layer_rule */

} /* end wire_rule */

wire_slotting_rule (wire_slotting_rule_name

) {

max_metal_density : float ;

min_length : float ;

min_width : float ;

slot_length_range (min

float

, max

float

) ;

slot_length_side_clearance (min

float

, max

float

) ;

slot_length_wise_spacing (min

float

, max

float

) ;

slot_width_range (min

float

, max

float

) ;

slot_width_side_clearance (min

float

, max

float

) ;

slot_width_wise_spacing (min

float

, max

float

) ;

} /* end wire_slotting_rule */

} /* end topological_design_rule */

process_resource(process_name

{

baseline_temperature : float ;

field_oxide_thickness : float ;

plate_cap(float, ..., float) ;

process_scale_factor : float ;

process_cont_layer () {

process_routing_layer(layer_name

) {

cap_multiplier : float ;

cap_per_sq : float ;

conformal_lateral_oxide (thickness

float

, topwall_thickness

float

sidewall_thickness

float

, permittivity

float

) ;

coupling_cap : float ;

edgecapacitance : float ;

fringe_cap : float ;

height : float ;

inductance_per_dist : float ;

lateral_oxide (thickness

float

, permittivity

float

) ;

lateral_oxide_thickness : float ;

oxide_thickness : float ;

res_per_sq : float ;

shrinkage : float ;

thickness : float ;

resistance_table (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

} /* end resistance_table */

shrinkage_table (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") ;

} /* end shrinkage_table */

} /* end process_routing_layer */

process_via(via_name

) {

capacitance : float ;

inductance : float ;

res_temperature_coefficient : float ;

resistance : float ; /* per contact-cut rectangle */

} /* end process_via */

process_via_rule_generate(via_name

) {

capacitance : float ;

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inductance : float ;

res_temperature_coefficient : float ;

resistance : float ;

} /* end process_via_rule_generate */

process_wire_rule(wire_rule_name

) {

process_via(via_name

) {

capacitance : float ;

inductance : float ;

res_temperature_coefficient : float ;

resistance : float ;

} /* end process_via */

} /* end process_wire_rule */

} /*end process_resource */

visual_settings () {

stipple (stipple_name

) {

height : integer ;

width : integer ;

pattern (value_1

enum

, ..., value_N

enum

;

} /* end stipple */

primary_color () {

light_blue : integer ;

light_green : integer ;

light_red : integer ;

medium_blue : integer ;

medium_green : integer ;

medium_red : integer ;

} /* end primary color */

color (color_name

) {

blue_intensity : integer ;

green_intensity : integer ;

red_intensity : integer ;

} /* end color */

height : integer ;

line_style (line_name

) {

pattern (value_1

enum

, ..., value_N

enum

;

width : integer ;

} /* end line_styles */

} /* end visual settings */

layer_panel () {

display_layer (display_layer_name

) {

blink : Boolean ;

color : color_name

string

;

is_mask_layer : Boolean ;

line_style : line_style_name

string

;

mask_layer : layer_name

string

;

stipple : stipple_name

string

;

selectable : Boolean ;

visible : Boolean ;

} /* end display_layer */

} /* end layer_panel */

milkyway_layer_map () {

stream_layer (layer_name

) {

gds_map (layer

int

, datatype

int

) ;

mw_map (layer

int

, datatype

int

) ;

object_type : data | text | data_text ;

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} /* end stream_layer */

} /* end milkyway_layer_map */

pr_preparation_rules() {

pr_view_extraction_rules() {

apply_to_cell_type : value

enum

;

generate_cell_boundary : Boolean ;

blockage_extraction() {

max_dist_to_combine_blockage (“value

string

, value

float

”);

preserve_all_metal_blockage : Boolean ;

routing_blockage_display : Boolean ;

routing_blockage_includes_spacing : Boolean ;

treat_all_layers_as_thin_wires ; Boolean ;

treat_layer_as_thin_wire (value

string

, value

string

, ... ) ;

}

pin_extraction () {

expand_small_pin_on_blockage : Boolean ;

extract_connectivity : Boolean ;

extract_connectivity_thru_cont_layers(value

string

,value

string

, ... );

/* these three attributes can have multiple pair-statements */

must_conn_area_layer_map ( “value

string

, value

string

”);

must_conn_area_min_width (“value

string

, value

float

”);

pin2text_layer_map (value

string

, value

string

) ;

}

via_region_extraction () {

apply_to_vias (via_name

string

, via_name

string

, ... ) ;

apply to_macro : Boolean ;

use_rotated_vias : Boolean ;

top_routing_layer : value

string

;

}

cell_flatten_rules() {

save_flattened_data_to_original : Boolean ;

}

pr_boundary_generation_rules () {

pr_boundary_generation () {

bottom_boundary_offset : value

float

;

bottom_boundary_reference : value

enum

;

doubleback_pg_row : Boolean ;

left_boundary_offset : value

float

;

left_boundary_reference : value

enum

;

on_overlap_layer : Boolean ;

use_overlap_layer_as_boundary

}

tile_generation () {

all_cells_single_height : Boolean ;

pg_rail_orientation : value

enum

;

tile_name : value

;

tile_height : value

float

;

tile_width : value

floaat

;

}

streamin_rules () {

boundary_layer_map ( value

int

, value

int

) ;

overwrite_existing_cell : Boolean ;

save_unmapped_mw_layers : Boolean ;

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save_unmapped_stream_layers : Boolean ;

text_scaling_factor : value

float

;

update_existing_cell : Boolean ;

use_boundary_layer_as_geometry : Boolean ;

}

macro(cell_name

) {

areaio_pad | input pad | output_pad | inout_pad |

power_pad | spacer_pad | core | antennadiode_core |

feedthru_core | spacer_core | tiehigh_core | tielow_core

| pre_endcap | post_endcap | topleft_endcap |

topright_endcap | bottomleft_endcap |

bottomright_endcap ;

create_full_pin_geometry : Boolean; /* default TRUE */

eq_cell : eq_cell_name

;

extract_via_region_from_cont_layer (string, string, ...) ;

extract_via_region_within_pin_area : Boolean ;

in_site : site_name

;

in_tile : tile_name

;

leq_cell : leq_cell_name

;

obs_clip_box(float, float, float, float); /* top, right, bottom, left */

origin(float, float) ;

source : user | generate | block ;

size(float, float) ;

symmetry : x | y | xy | r | rxy ; /* default = none */

foreign(foreign_object_name

) {

orientation : FE | FN | E | FS | FW | N | S | W ;

origin(float, float) ;

} /* end foreign */

obs() {

via(via_name

, x

float

, y

float

) ;

via_iterate(int, int, float, float, string, float, float) ;

/* num_x, num_y, spacing_x, spacing_y, via_name

, start_x, start_y */

geometry(layer_name

) {

core_blockage_margin : value

float

;

feedthru_area_layer : value

string

;

generate_core_blockage : Boolean ;

max_dist_to_combine_current_layer_blockage( value

float

, value

float

) ;

path(float, float, float, ...) ;

/* width, numX, numY, spaceX, spaceY, width, x0, y0, x1, y1, ... */

path_iterate(integer, integer, float, float, ...) ;

/* width, numX, numY, spaceX, spaceY, width, x0, y0, x1, y1, ... */

polygon(float, float, float, float, float, float, ...) ;

/* x, y, x0, y0, x1, x2, ..., */

polygon_iterate(integer, integer, float, float, float, float,

float, float, ...) ;

/* numX, numY, spaceX, spaceY, x0, y0, x1, y1, ... */

preserve_current_layer_blockage : Boolean ;

treat_current_layer_as_thin_wires : Boolean ;

rectangle(X0

float

, Y0

float

, X1

float

, Y1

float

) ;

rectangle_iterate(integer, integer, float, float, float, float,

float, float) ;

/* numX, numY, spaceX, spaceY, x0, y0, x1, y1 */

treat_current_layer_as_thin_wire : Boolean ;

} /* end geometry */

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} /* end obs */

pin(pin_name

) {

antenna_contact_accum_area (float, float, float, ...) ;

antenna_contact_accum_side_area (float, float, float, ...) ;

antenna_contact_area (float, float, float, ...) ;

antenna_contact_area_partial_ratio (float, float, float, ...) ;

antenna_contact_side_area (float, float, float, ...) ;

antenna_contact_side_area_partial_ratio (float, float, float, ...) ;

antenna_diffusion_area (float, float, float, ...) ;

antenna_gate_area (float, float, float, ...) ;

antenna_metal_accum_area (float, float, float, ...) ;

antenna_metal_accum_side_area (float, float, float, ...) ;

antenna_metal_area (float, float, float, ...) ;

antenna_metal_area_partial_ratio (float, float, float, ...) ;

antenna_metal_side_area (float, float, float, ...) ;

antenna_metal_side_area_partial_ratio (float, float, float, ...) ;

capacitance : float

;

direction : inout | input | feedthru | output | tristate ;

eq_pin : pin_name

;

must_join : pin_name

;

pin_shape : clock | power | signal | analog | ground ;

pin_type : clock | power | signal | analog | ground ;

foreign(foreign_object_name

) {

orientation : FE | FN | E | FS | FW | N | S | W ;

origin(x

float

, y

float

) ;

} /* end foreign */

port() {

via(via_name

, float, float) ;

via_iterate(integer, integer, float, float, string, float, float) ;

/*num_x, num_y, spacing_x, spacing_y, via_name

, start_x, start_y */

geometry(layer_name

) {

path(float, float, float, ...) ;

/* width, numX, numY, spaceX, spaceY, width, x0, y0, x1, y1, ... */

path_iterate(integer, integer, float, float, float, float,...) ;

/* width, numX, numY, spaceX, spaceY, width, x0, y0, x1, y1, ... */

polygon(float, float, float, float, float, float, ...) ;

/* x, y, x0, y0, x1, x2, ..., */

polygon_iterate(integer, integer, float, float, ...) ;

/* numX, numY, spaceX, spaceY, x0, y0, x1, y1, ... */

rectangle(X0

float

, Y0

float

, X1

float

, Y1

float

) ;

/* numX, numY, spaceX, spaceY, x0, y0, x1, y1 */

rectangle_iterate(integer, integer, float, float, float, float,

float, float) ;

/* numX, numY, spaceX, spaceY, x0, y0, x1, y1 */

} /* end geometry */

} /* end port */

} /* end pin */

site_array(site_name

) {

orientation : FE | FN | E | FS | FW | N | S | W ;

origin(x

float

, y

float

) ;

iterate(num_x

int

, num_y

int

, spacing_x

float

, spacing_y

float

);

} /* end site_array */

} /* end macro */

} /* end phys_library */

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phys_library Group

The first line in the phys_library group names the library. This line is the first executable

statement in your library.

Syntax

phys_library (library_name

) {

... library description ...

}

library_name

The name of your physical library.

Example

phys_library(sample) {

...library description...

}

bus_naming_style Simple Attribute

Defines a naming convention for bus pins.

Syntax

phys_library(library_name

) {

...bus_naming_style :"value

string

...

}

value

Can contain alphanumeric characters, braces, underscores, dashes, or parentheses.

Must contain one

%s symbol and one %d symbol. The %s and %d symbols can appear in

any order, but at least one nonnumeric character must separate them.

The colon character is not allowed in a

bus_naming_style attribute value because the

colon is used to denote a range of bus members.

You construct a complete bused-pin name by using the name of the owning bus and the

member number. The owning bus name is substituted for the

%s, and the member

number replaces the

%d.

Example

bus_naming_style : "%s[%d]" ;

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capacitance_conversion_factor Simple Attribute

The capacitance_conversion_factor attribute specifies the capacitance resolution in

the physical library database. For example, when you specify a value of 1000, all the

capacitance values are stored in the database as 1/1000 of the

capacitance_unit value.

Syntax

phys_library(library_name

) {

...

capacitance_conversion_factor : value

int

;

...

}

value

Valid values are any multiple of 10.

Example

capacitance_conversion_factor : 1000 ;

capacitance_unit Simple Attribute

The capacitance_unit attribute specifies the unit for capacitance.

Syntax

phys_library(library_name

) {

...

capacitance_unit : value

enum

;

...

}

value

Valid values are 1pf, 1ff, 10ff, 100ff, 1nf, 1uf, 1mf, and 1f.

Example

capacitance_unit : 1pf ;

comment Simple Attribute

This optional attribute lets you provide additional descriptive information about the library.

Syntax

phys_library(library_name

) {

comment : "value

string

" ;

...

}

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value

Any alphanumeric sequence.

Example

comment : "0.18 CMOS library for SNPS" ;

current_conversion_factor Simple Attribute

The current_conversion_factor attribute specifies the current resolution in the physical

library database. For example, when you specify a value of 1000, all the current values are

stored in the database as 1/1000 of the

current_unit value.

Syntax

phys_library(library_name

) {

...

current_conversion_factor : value

int

;

...

}

value

Valid values are any multiple of 10.

Example

current_conversion_factor : 1000 ;

current_unit Simple Attribute

The current_unit attribute specifies the unit for current.

Syntax

phys_library(library_name

) {

...

current_unit : value

enum

;

...

}

value

Valid values are 1uA, 1mA, and 1A.

Example

current_unit : 1mA ;

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date Simple Attribute

The date attribute specifies the library creation date.

Syntax

phys_library(library_name

) {

...

date : "value

string

" ;

...

}

value

Any alphanumeric sequence.

Example

date : "1st Jan 2003" ;

dist_conversion_factor Simple Attribute

The dist_conversion_factor attribute specifies the distance resolution in the physical

library database. For example, when you specify a value of 1000, all the distance values are

stored in the database as 1/1000 of the

distance_unit value.

Syntax

phys_library(library_name

) {

...

dist_conversion_factor : value

int

;

...

}

value

Valid values are any multiple of 10.

Example

dist_conversion_factor : 1000 ;

distance_unit Simple Attribute

The distance attribute specifies the linear distance unit.

Syntax

phys_library(library_name

) {

...

distance_unit : value

enum

;

...

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}

value

Valid values are 1mm and 1um.

Example

distance_unit : 1mm ;

frequency_conversion_factor Simple Attribute

The frequency_conversion_factor attribute specifies the frequency resolution in the

physical library database. For example, when you specify a value of 1000, all the frequency

values are stored in the database as 1/1000 of the

frequency_unit value.

Syntax

phys_library(library_name

) {

...

frequency_conversion_factor : value

int

...

}

value

Valid values are any multiple of 10.

Example

frequency_conversion_factor : 1 ;

frequency_unit Simple Attribute

The frequency_unit attribute specifies the frequency unit.

Syntax

phys_library(library_name

) {

...

frequency_unit : value

enum

;

...

}

value

The valid value is 1mhz.

Example

frequency_unit : 1mhz ;

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has_wire_extension Simple Attribute

The has_wire_extension attribute specifies whether wires are extended by a half width at

pins.

Syntax

phys_library(library_name

) {

...

has_wire_extension : value

Boolean

;

...

}

value

Valid values are TRUE (default) and FALSE.

Example

has_wire_extension : TRUE ;

inductance_conversion_factor Simple Attribute

The inductance_conversion_factor attribute specifies the inductance resolution in the

physical library database. For example, when you specify a value of 1000, all the inductance

values are stored in the database as 1/1000 of the

inductance_unit value.

Syntax

phys_library(library_name

) {

...

inductance_conversion_factor : value

int

;

...

}

value

Valid values are any multiple of 10.

Example

inductance_conversion_factor : 1000 ;

inductance_unit Simple Attribute

The inductance_unit attribute specifies the unit for inductance.

Syntax

phys_library(library_nameid) {

...

inductance_unit : value

enum

;

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...

}

value

Valid values are 1fh, 1ph, 1nh, 1uh, 1mh, and 1h.

Example

inductance_unit : 1ph ;

is_incremental_library Simple Attribute

The is_incremental_library attribute specifies whether this library is only a partial

library which is meant to be used as an extension of a primary library.

Syntax

phys_library(library_name

) {

...

is_incremental_library : value

Boolean

;

...

}

value

Valid values are TRUE (default) and FALSE.

Example

is_incremental_library : TRUE ;

manufacturing_grid Simple Attribute

The manufacturing_grid attribute defines the manufacture grid resolution in the physical

library database. This is the smallest geometry size in this library for this process and uses

the unit defined in the

distance_unit attribute.

Syntax

phys_library(library_name

) {

...

manufacturing_grid : value

float

;

...

}

value

Valid values are any positive floating-point number.

Example

manufacturing_grid : 100 ;

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power_conversion_factor Simple Attribute

The power_conversion_factor attribute specifies the factor to use for power conversion.

Syntax

phys_library(library_name

) {

...

power_conversion_factor : value

int

;

...

}

value

Valid values are any positive integer.

Example

time_conversion_factor : 100 ;

power_unit Simple Attribute

The power_unit attribute specifies the unit for power.

Syntax

phys_library(library_name

) {

...

power_unit : value

enum

;

...

}

value

Valid values are 1uw, 10uw, 100uw, 1mw. 10mw, 100mw, and 1w.

Example

power_unit : 100 ;

resistance_conversion_factor Simple Attribute

The resistance_conversion_factor attribute specifies the resistance resolution in the

physical library database. For example, when you specify a value of 1000, all the resistance

values are stored in the database as 1/1000 of the

resistance_unit value.

Syntax

phys_library(library_name

) {

...

resistance_conversion_factor : value

int

;

...

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}

value

Valid values are any multiple of 10.

Example

resistance_conversion_factor : 1000 ;

resistance_unit Simple Attribute

The resistance_unit attribute specifies the unit for resistance.

Syntax

phys_library(library_nameid) {

...

resistance_unit : value

enum

;

...

}

value

Valid values are 1mohm, 1ohm, 10ohm, 100ohm, 1kohm, and 1Mohm.

Example

resistance_unit : 1ohm ;

revision Simple Attribute

This optional attribute lets you specify the library revision number.

Syntax

phys_library(library_name

) {

...

revision : "value

string

...

}

value

Any alphanumeric sequence.

Example

revision : "Revision 2.0.5" ;

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SiO2_dielectric_constant Simple Attribute

Use the SiO2_dielectric_constant attribute to specify the relative permittivity of SiO2

that is to be used to calculate sidewall capacitance.

You determine the dielectric unit by dividing the unit for measuring capacitance by the unit

for measuring distance. For example,

Syntax

phys_library(library_name

) {

...

Si02_dielectric_constant : "value

float

...

}

value

A floating-point number representing the constant.

Example

Si02_dielectric_constant : 3.9 ;

time_conversion_factor Simple Attribute

The time_conversion_factor attribute specifies the factor to use for time conversions.

Syntax

phys_library(library_name

) {

...

time_conversion_factor : value

int

;

...

}

value

Valid values are any positive integer.

Example

time_conversion_factor : 100 ;

time_unit Simple Attribute

The time_unit attribute specifies the unit for time.

dielectric

capacitance unit

distance unit

--------------------------------------

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Syntax

phys_library(library_name

) {

...

time_unit : value

enum

;

...

}

value

Valid values are 1ns, 100ps, 10ps, and 1ps.

Example

time_unit : 100 ;

voltage_conversion_factor Simple Attribute

The voltage_conversion_factor attribute specifies specifies the factor to use for voltage

conversions.

Syntax

phys_library(library_name

) {

...

voltage_conversion_factor : value

int

;

...

}

value

Valid values are any positive integer.

Example

voltage_conversion_factor : 100 ;

voltage_unit Simple Attribute

The voltage_unit attribute specifies the unit for voltage.

Syntax

phys_library(library_name

) {

...

voltage_unit : value

enum

;

...

}

value

Valid values are 1mv, 10mv, 100mv, and 1v.

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Example

voltage_unit : 100 ;

antenna_lut_template Group

The antenna_lut_template group defines the table template used to specify the

antenna_ratio table. The antenna_ratio table is a one-dimensional template that

accepts only

antenna_diffusion_area limit as a valid value.

Syntax

phys_library(library_name

) {

...

antenna_lut_template (template_name

) {

...description...

}

...

}

template_name

The name of this lookup table template.

Example

antenna_lut_template (antenna_template_1) {

...

}

Simple Attribute

variable_1

Complex Attribute

index_1

variable_1 Simple Attribute

The

variable_1 attribute specifies the antenna diffusion area.

Syntax

phys_library(library_name

) {

...

antenna_lut_template (template_name

) {

variable_1 : variable_name

;

...

}

...

}

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variable_name

The only valid value for

variable_1 is antenna_diffusion_area.

Example

antenna_lut_template (antenna_template_1) {

variable_1 : antenna_diffusion_area ;

}

index_1 Complex Attribute

The

index_1 attribute specifies the default indexes.

Syntax

phys_library(library_name

) {

...

antenna_lut_template(template_name

) {

index_1 (value

float

, value

float

, value

float

, ...);

...

}

...

}

value, value, value, ...

Floating-point numbers that represent the default indexes.

Example

antenna_lut_template (antenna_template_1) {

index_1 (0.0, 0.159, 0.16) ;

}

resistance_lut_template Group

The resistance_lut_template group defines the template referenced by the

resistance_table group.

Syntax

phys_library(library_name

) {

...

resistance_lut_template (template_name

) {

...description...

}

...

}

template_name

The name of this lookup table template.

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Example

resistance_lut_template (resistance_template_1) {

...

}

Simple Attributes

variable_1

variable_2

Complex Attributes

index_1

index_2

variable_1 and variable_2 Simple Attributes

Use these attributes to specify whether the variable represents the routing width or the

routing spacing.

Syntax

phys_library(library_name

) {

...

resistance_lut_template (template_name

) {

variable_1 : routing_type

;

variable_2 : routing_type

;

...

}

...

}

routing_type

Valid values are

routing_width and routing_spacing. The values for variable_1

and

variable_2 must be different.

index_1 and index_2 Complex Attributes

Use these attributes to specify the default indexes.

Syntax

phys_library(library_name

) {

...

resistance_lut_template (template_name

) {

...

index_1 (value

float

, value

float

, value

float

, ...);

index_2 (value

float

, value

float

, value

float

, ...);

...

}

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...

}

value, value, value, ...

Floating-point numbers that represent the default indexes.

Example

resistance_lut_template (resistance_template_1) {

variable_1 : routing_width ;

variable_2 : routing_spacing ;

index_1 (0.2, 0.4, 0.6, 0.8);

index_2 (0.1, 0.3, 0.5, 0.7);

}

shrinkage_lut_template Group

The shrinkage_lut_template group defines the template referenced by the

shrinkage_table group.

Syntax

phys_library(library_name

) {

...

shrinkage_lut_template (template_name

) {

...description...

}

...

}

template_name

The name of this lookup table template.

Example

shrinkage_lut_template (shrinkage_template_1) {

...

}

Simple Attributes

variable_1

variable_2

Complex Attributes

index_1

index_2

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variable_1 and variable_2 Simple Attributes

Use these attributes to specify whether the variable represents the routing width or the

routing spacing.

Syntax

phys_library(library_name

) {

...

shrinkage_lut_template (template_name

) {

variable_1 : routing_type

;

variable_2 : routing_type

;

...

}

...

}

routing_type

Valid values are

routing_width and routing_spacing. The values for variable_1

and

variable_2 must be different.

index_1 and index_2 Complex Attributes

Use these attributes to specify the default indexes.

Syntax

phys_library(library_name

) {

...

shrinkage_lut_template (template_name

) {

...

index_1 (value

float

, value

float

, value

float

, ...);

index_2 (value

float

, value

float

, value

float

, ...);

...

}

...

}

value, value, value, ...

Floating-point numbers that represent the default indexes.

Example

shrinkage_lut_template (resistance_template_1) {

variable_1 : routing_width ;

variable_2 : routing_spacing ;

index_1 (0.3, 0.7, 0.8, 1.2);

index_2 (0.2, 0.4, 0.9, 1.1);

}

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spacing_lut_template Group

The spacing_lut_template group defines the template referenced by the spacing_table

group.

Syntax

phys_library(library_name

) {

...

spacing_lut_template (template_name

) {

...description...

}

...

}

template_name

The name of this lookup table template.

Example

spacing_lut_template (spacing_template_1) {

...

}

Simple Attributes

variable_1

variable_2

variable_3

Complex Attributes

index_1

index_2

index_3

variable_1, variable_2, and variable_3 Simple Attributes

Use these attributes to specify whether the variable represents the routing width or the

routing spacing.

Syntax

phys_library(library_name

) {

...

spacing_lut_template (template_name

) {

variable_1 : routing_type

;

variable_2 : routing_type

;

variable_3 : routing_type

;

...

}

...

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}

routing_type

The valid value for

variable_1 is routing_width. The valid values for variable_2 are

routing_width and routing_length. The valid value for variable_3 is

routing_length.

index_1, index_2, and index_3 Complex Attributes

Use these attributes to specify the default indexes.

Syntax

phys_library(library_name

) {

...

spacing_lut_template (template_name

) {

...

index_1 (value

float

, value

float

, value

float

, ...);

index_2 (value

float

, value

float

, value

float

, ...);

index_3 (value

float

, value

float

, value

float

, ...);

...

}

...

}

value, value, value, ...

Floating-point numbers that represent the default indexes.

Example

spacing_lut_template (resistance_template_1) {

variable_1 : routing_width ;

variable_2 : routing_width ;

variable_3 : routing_length ;

index_1 (0.3, 0.6, 0.9, 1.2);

index_2 (0.3, 0.6, 0.9, 1.2);

index_2 (1.2, 2.4, 3.8, 5.0);

}

wire_lut_template Group

The wire_lut_template group defines the template referenced by the

wire_extension_range_table group.

Syntax

phys_library(library_name

) {

...

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wire_lut_template (template_name

) {

...description...

}

...

}

template_name

The name of this lookup table template.

Example

wire_lut_template (wire_template_1) {

...

}

Simple Attributes

variable_1

variable_2

variable_3

Complex Attributes

index_1

index_2

index_3

variable_1, variable_2, and variable_3 Simple Attributes

Use these attributes to specify the routing widths and lengths.

Syntax

phys_library(library_name

) {

...

wire_lut_template (template_name

) {

variable_1 : routing_type

;

variable_2 : routing_type

;

variable_3 : routing_type

;

...

}

...

}

routing_type

The valid values for

variable_1 and variable_2 are routing_width, routing_length,

top_routing_width

, bottom_routing_width, extension_width, and

extension_length. The valid values for variable_3 are routing_width,

routing_length,

extension_width, and extension_length.

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index_1, index_2, and index_3 Complex Attributes

Use these attributes to specify the default indexes.

Syntax

phys_library(library_name

) {

...

wire_lut_template (template_name

) {

...

index_1 (value

float

, value

float

, value

float

, ...);

index_2 (value

float

, value

float

, value

float

, ...);

index_3 (value

float

, value

float

, value

float

, ...);

...

}

...

}

value, value, value, ...

Floating-point numbers that represent the default indexes.

Example

wire_lut_template (resistance_template_1) {

variable_1 : routing_width ;

variable_2 : routing_width ;

variable_3 : routing_length ;

index_1 (0.3, 0.6, 0.9, 1.2);

index_2 (0.3, 0.6, 0.9, 1.2);

index_2 (1.2, 2.4, 3.8, 5.0);

}

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2-1

Specifying Attributes in the resource Group 2

You use the resource group to specify the process architecture (standard cell or array) and

to specify the layer information (such as routing or contact layer). The

resource group is

defined inside the

phys_library group and must be defined before you model any cell.

The information in this chapter includes a description and syntax example for the attributes

that you can define within the

resource group.

Chapter 2: Specifying Attributes in the resource Group

Syntax for Attributes in the resource Group 2-2

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Syntax for Attributes in the resource Group

The following sections describe the syntax for the attributes you need to define in the

resource group. The syntax for the groups you can define within the

resource group are

described in Chapter 3.

resource Group

The resource group specifies the process architecture class. You must define a resource

group before you define any

macro group. Also, you can have only one resource group in a

physical library.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

...

}

architecture

Valid values are

std_cell (standard cell technology) and array (gate array technology).

Example

resource(std_cell) {

...

}

Complex Attributes

contact_layer

device_layer

overlap_layer

substrate_layer

Note:

You must specify the layer definition from the substrate out; that is, from the layer closest

to the substrate out to the layer farthest from the substrate. You use the following

attributes and groups to specify the layer definition:

Attributes:

contact_layer, device_layer, and overlap_layer

Groups: poly_layer, and routing_layer.

Groups

array

cont_layer

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implant_layer

ndiff_layer

pdiff_layer

poly_layer

routing_layer

routing_wire_model

site

tile

via

contact_layer Complex Attribute

The contact_layer attribute defines the contact cut layer that enables current to flow

between the device and the first routing layer, or between any two routing layers.

Syntax

phys_library(library_name

) {

...

resource(architecture

enum

) {

...

contact_layer(layer_name

) ;

...

}

layer_name

The name of the contact layer.

Example

contact_layer(cut01) ;

device_layer Complex Attribute

The device_layer attribute specifies the layers that are fixed in the base array.

Syntax

phys_library(library_name

) {

...

resource(architecture

enum

) {

...

device_layer(layer_name

) ;

...

}

layer_name

The name of the device layer.

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Example

device_layer(poly) ;

overlap_layer Complex Attribute

The overlap_layer attribute specifies a layer for describing a rectilinear footprint of a cell.

Syntax

phys_library(library_name

) {

...

resource(architecture

enum

) {

...

overlap_layer(layer_name

) ;

...

}

layer_name

The name of the overlap layer.

Example

overlap_layer(ovlp1) ;

substrate_layer Complex Attribute

The substrate_layer attribute specifies a substrate layer.

Syntax

phys_library(library_name

) {

...

resource(architecture

enum

) {

...

substrate_layer(layer_name

) ;

...

}

layer_name

The name of the substrate layer.

Example

substrate_layer(ovlp1) ;

3-1

Specifying Groups in the resource Group 3

You use the resource group to specify the process architecture (standard cell or array) and

to specify the layer information (such as routing or contact layer). The

resource group is

defined inside the

phys_library group and must be defined before you model any cell.

This chapter describes the following groups:

• array Group

• cont_layer Group

• implant_layer Group

• ndiff_layer Group

• pdiff_layer Group

• poly_layer Group

• routing_layer Group

• routing_wire_model Group

• site Group

• tile Group

• via Group

• via_array_rule Group

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-2

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Syntax for Groups in the resource Group

The following sections describe the groups you define in the resource group.

array Group

Use this group to specify the base array for a gate array architecture.

Syntax

phys_library(library_nameid) {

resource(architecture

enum

) {

array(array_name

) {

...

}

array_name

Specifies a name for the base array.

Note:

Standard cell technologies do not contain array definitions.

Example

array(ar1) {

...

}

Groups

floorplan

routing_grid

tracks

floorplan Group

Use this group to specify the arrangement of sites in your design.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

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floorplan(floorplan_name

) {

...

}

floorplan_name

Specifies the name of a floorplan. If you do not specify a name, this floorplan becomes

the default floorplan.

Example

floorplan(myPlan) {

...

}

Group

site_array

site_array Group

Use this group to specify an array of placement site locations.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

floorplan(floorplan_name

) {

site_array(site_name

) {

...

}

site_name

The name of a predefined site to be used for this array.

Example

site_array(core) {

...

}

Simple Attribute

orientation

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Complex Attribute

iterate

origin

placement_rule

orientation Simple Attribute

The

orientation attribute specifies the site orientation when placed on the floorplan.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

floorplan(floorplan_name

) {

site_array(site_name

) {

orientation : value

enum

;

...

}

value

Valid values are

N (north), E (east), S (south), W (west), FN (flip north), FE (flip east), FS

(flip south), and

FW (flip west), as shown in Figure 3-1.

Figure 3-1 Orientation Examples

N (north) E (east) S (south) W (west)

FW (flip west)FE (flip east)FN (flip north) FS (flip south)

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Example

orientation : E ;

iterate Complex Attribute

The

iterate attribute specifies how many times to iterate the site from the specified origin.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

floorplan(floorplan_name

) {

site_array(site_name

) {

iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

) ;

...

}

num_x, num_y

Floating-point numbers that represent the x and y iteration values.

space_x, space_y

Floating-point numbers that represent the spacing values.

Example

iterate(20, 40, 55.200, 16.100) ;

origin Complex Attribute

The

origin attribute specifies the point in the floorplan where you can place the first

instance of your array.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

floorplan(floorplan_name

) {

site_array(site_name

) {

origin(num_x

float

, num_y

float

) ;

...

}

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}

num_x, num_y

Floating-point numbers that specify the x- and y-coordinates for the starting point of your

array.

Example

origin(-1.00, -1.00) ;

placement_rule Complex Attribute

The

placement_rule attribute specifies whether you can place an instance on the specified

site array.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

floorplan(floorplan_name

) {

site_array(site_name

) {

placement_rule : value

enum

;

...

}

value

Valid values are

regular, can_place, and cannot_occupy.

where

Example

placement_rule : can_place ;

Value Description

regular Base array of sites occupying the floorplan.

can_place Sites are available for placement.

cannot_occupy Sites are not available for placement.

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Syntax for Groups in the resource Group 3-7

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routing_grid Group

Use this group to specify the global cell grid overlaying the array, as shown in Figure 3-2. If

you do not specify a routing grid, the default grid is used.

Figure 3-2 A Routing Grid

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

routing_grid() {

routing_direction : value

enum

;

grid_pattern(start

float

, grids

int

space

float

) ;

}

Example

routing_grid() {

...

}

Simple Attribute

routing_direction

Complex Attribute

grid_pattern

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-8

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routing_direction Simple Attribute

The

routing_direction attribute specifies the preferred grid routing direction.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

routing_grid() {

routing_direction : value

enum

;

...

}

value

Valid values are

horizontal and vertical.

Example

routing_direction : horizontal ;

grid_pattern Complex Attribute

The

grid_pattern attribute specifies the global cell grid pattern.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

routing_grid() {

grid_pattern(start

float

, grids

int

, space

float

) ;

...

}

start

A floating-point number that represents the grid starting point.

grids

A number that represents the number of grids in the specified routing direction.

space

A floating-point number that represents the spacing between the respective grids.

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Syntax for Groups in the resource Group 3-9

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-9

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Example

grid pattern(1.0, 100, 2.0)

tracks Group

Use this group to specify the routing track grid for the gate array.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

tracks() {

...

}

Note:

You must define at least one

track group for horizontal routing and one group for vertical

routing.

Simple Attributes

layers

routing_direction

Complex Attribute

track_pattern

layers Simple Attribute

The

layers attribute specifies a list of layers available for the tracks.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

tracks() {

layers: "layer1_name

, layer2_name

..., layern_name

" ;

...

}

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Syntax for Groups in the resource Group 3-10

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layer1_name, layer2_name, ..., layern_name

A list of layer names.

Example

layers: "m1, m3" ;

routing_direction Simple Attribute

The

routing_direction attribute specifies the track direction and the possible routing

direction.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

tracks() {

...

routing_direction:value

enum

;

...

}

value

Valid values are

horizontal and vertical.

Example

routing_direction: horizontal ;

track_pattern Complex Attribute

The

track_pattern attribute specifies the track pattern.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

array(array_name

) {

tracks() {

...

track_pattern(start

float

,tracks

int

, spacing

float

) ;

}

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Syntax for Groups in the resource Group 3-11

Chapter 3: Specifying Groups in the resource Group

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start, tracks, spacing

Specifies the starting-point coordinate, the number of tracks, and the space between the

tracks, respectively.

Example

track_pattern (1.40, 50, 10.5) ;

cont_layer Group

Use this group to specify values for the contact layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer(layer_name

) {

...

}

layer_name

The name of the contact layer.

Example

cont_layer() {

...

}

Simple Attributes

corner_min_spacing

max_stack_level

spacing

Groups

enclosed_via_rules

max_current_ac_absavg

max_current_ac_avg

max_current_ac_peak

max_current_ac_rms

max_current_dc_avg

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-12

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corner_min_spacing Simple Attribute

The corner_min_spacing attribute specifies the minimum spacing allowed between two

vias when their corners point to each other; otherwise specifies the minimum edge-to-edge

spacing.

Note:

The

corner_min_spacing complex attribute in the topological_design_rules group

specifies the minimum distance between two contact layers.

Syntax

phys_library(library_name

) {

...

resource(architecture

enum

) {

cont_layer () {

...

corner_min_spacing : value

float

;

...

}

value

A positive floating-point number representing the spacing value.

Example

corner_min_spacing : 0.0 ;

max_stack_level Simple Attribute

The max_stack attribute specifies a value for the maximum number of stacked vias.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer() {

...

max_stack_level : value

int

;

...

}

value

An integer representing the stack level.

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Syntax for Groups in the resource Group 3-13

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Example

max_stack_level : 2 ;

spacing Simple Attribute

Defines the minimum separation distance between the edges of objects on the layer when

the objects are on different nets.

Syntax

phys_library(library_name

) {

...

resource(architecture

enum

) {

cont_layer () {

...

spacing : value

float

;

...

}

value

A positive floating-point number representing the minimum spacing value.

Example

spacing : 0.0 ;

enclosed_cut_rule Group

Use this group to specify the rules for cuts in the middle of the cut array.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

...

enclosed_cut_rule() {

...

}

Simple Attributes

max_cuts

max_neighbor_cut_spacing

min_cuts

min_enclosed_cut_spacing

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min_neighbor_cut_spacing

max_cuts Simple Attribute

The

max_cuts attribute specifies the maximum number of neighboring cuts allowed within a

specified space (range).

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer() {

enclosed_cut_rule(layer_name

) {

max_cuts : value

float

;

...

}

value

A floating-point number representing the number of cuts.

Example

max_cuts : 0.0 ;

max_neighbor_cut_spacing Simple Attribute

The

max_neighbor_cut_spacing attribute specifies the spacing (range) around the cut on

the perimeter of the array.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

enclosed_cut_rule(layer_name

) {

max_neighbor_cut_spacing : value

float

;

...

}

value

A floating-point number representing the spacing.

Example

max_neighbor_cut_spacing : 0.0 ;

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min_cuts Simple Attribute

The

min_cuts attribute specifies the minimum number of neighboring cuts allowed within a

specified space (range).

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

enclosed_cut_rule(layer_name

) {

min_cuts : value

float

;

...

}

value

A floating-point number representing the number of cuts.

Example

min_cuts : 0.0 ;

min_enclosed_cut_spacing Simple Attribute

The

min_enclosed_cut_spacing attribute specifies the spacing (range) around the cut on

the perimeter of the array.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

enclosed_cut_rule(layer_name

) {

min_enclosed_cut_spacing : value

float

;

...

}

value

A floating-point number representing the spacing.

Example

min_enclosed_via_spacing : 0.0 ;

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min_neighbor_cut_spacing Simple Attribute

The

min_neighbor_cut_spacing attribute specifies minimum spacing around the

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

enclosed_cut_rule(layer_name

) {

min_neighbor_via_spacing : value

float

;

...

}

value

A floating-point number representing the spacing around the cut on the perimeter of the

array..

Example

min_neighbor_cut_spacing : 0.0 ;

max_current_ac_absavg Group

Use this group to specify the absolute average value for the AC current that can pass

through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

...

max_current_ac_absavg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_absavg() {

...

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Chapter 3: Specifying Groups in the resource Group

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}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_avg Group

Use this group to specify an average value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

...

max_current_ac_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_avg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_peak Group

Use this group to specify a peak value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

...

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Syntax for Groups in the resource Group 3-18

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max_current_ac_peak(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_peak() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_rms Group

Use this group to specify a root mean square value for the AC current that can pass through

a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

...

max_current_ac_rms(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_rms() {

...

}

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Syntax for Groups in the resource Group 3-19

Chapter 3: Specifying Groups in the resource Group

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Complex Attributes

index_1

index_2

index_3

values

max_current_dc_avg Group

Use this group to specify an average value for the DC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

cont_layer () {

...

max_current_dc_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_dc_avg() {

...

}

Complex Attributes

index_1

index_2

values

implant_layer Group

Use this group to specify the legal placement rules when mixing high drive and low drive

cells in the detail placement.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

implant_layer(layer_name

) {

...

}

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}

layer_name

The name of the implant layer.

Simple Attributes

min_width

spacing

Complex Attribute

spacing_from_layer

min_width Simple Attribute

The min_width attribute specifies the minimum width of any dimension of an object on the

layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

implant_layer(layer_name

) {

min_width : value

float

;

...

}

value

A floating-point number representing the width.

Example

min_width : 0.0 ;

spacing Simple Attribute

The spacing attribute specifies the separation distance between the edges of objects on the

layer when the objects are on different nets.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

implant_layer(layer_name

) {

spacing : value

float

;

...

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Syntax for Groups in the resource Group 3-21

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}

value

A floating-point number representing the spacing.

Example

spacing : 0.0 ;

spacing_from_layer Complex Attribute

The spacing_from_layer attribute specifies the minimum allowable spacing between two

geometries on the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

implant_layer(layer_name

) {

spacing_from_layer (value

float

, name

);

...

}

value

A floating-point number representing the spacing.

name

A layer name.

Example

spacing_from_layer () ;

ndiff_layer Group

Use the ndiff_layer group to specify the maximum current values for the n-diffusion layer.

max_current_ac_absavg Group

Use this group to specify the absolute average value for the AC current that can pass

through a cut.

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-22

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

ndiff_layer () {

...

max_current_ac_absavg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_absavg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_avg Group

Use this group to specify an average value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

ndiff_layer () {

...

max_current_ac_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_avg() {

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Syntax for Groups in the resource Group 3-23

Chapter 3: Specifying Groups in the resource Group

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...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_peak Group

Use this group to specify a peak value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

ndiff_layer () {

...

max_current_ac_peak(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_peak() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_rms Group

Use this group to specify a root mean square value for the AC current that can pass through

a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

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Syntax for Groups in the resource Group 3-24

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ndiff_layer () {

...

max_current_ac_rms(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_rms() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_dc_avg Group

Use this group to specify an average value for the DC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

ndiff_layer () {

...

max_current_dc_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_dc_avg() {

...

}

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Syntax for Groups in the resource Group 3-25

Chapter 3: Specifying Groups in the resource Group

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Complex Attributes

index_1

index_2

values

pdiff_layer Group

Use the pdiff_layer group to specify the maximum current values for the p-diffusion layer.

max_current_ac_absavg Group

Use this group to specify the absolute average value for the AC current that can pass

through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff_layer () {

...

max_current_ac_absavg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_absavg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_avg Group

Use this group to specify an average value for the AC current that can pass through a cut.

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-26

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff_layer () {

...

max_current_ac_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_avg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_peak Group

Use this group to specify a peak value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff_layer () {

...

max_current_ac_peak(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_peak() {

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Syntax for Groups in the resource Group 3-27

Chapter 3: Specifying Groups in the resource Group

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...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_rms Group

Use this group to specify a root mean square value for the AC current that can pass through

a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff_layer () {

...

max_current_ac_rms(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_rms() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_dc_avg Group

Use this group to specify an average value for the DC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

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pdiff_layer () {

...

max_current_dc_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_dc_avg() {

...

}

Complex Attributes

index_1

index_2

values

poly_layer Group

Use this group to specify the poly layer name and properties.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

...

}

layer_name

The name of the poly layer.

Example

poly_layer() {

...

}

Simple Attributes

avg_lateral_oxide_permittivity

avg_lateral_oxide_thickness

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Syntax for Groups in the resource Group 3-29

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height

oxide_permittivity

oxide_thickness

res_per_sq

shrinkage

thickness

Complex Attributes

conformal_lateral_oxide

lateral_oxide

Groups

max_current_ac_absavg

max_current_ac_avg

max_current_ac_peak

max_current_ac_rms

max_current_dc_avg

avg_lateral_oxide_permittivity Simple Attribute

This attribute specifies a value representing the average lateral oxide permittivity.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

avg_lateral_oxide_permittivity : value

float

;

...

}

permittivity

A floating-point number that represents the lateral oxide permittivity.

Example

avg_lateral_oxide_permittivity (0.0 ) ;

avg_lateral_oxide_thickness Simple Attribute

This attribute specifies a value representing the average lateral oxide thickness.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

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avg_lateral_oxide_thickness : value

float

;

...

}

thickness

A floating-point number that represents the lateral oxide thickness.

Example

avg_lateral_oxide_thickness (0.0) ;

height Simple Attribute

The height attribute specifies the distance from the top of the substrate to the bottom of the

routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

height : type_name

float

;

...

}

type_name

A floating-point number representing the distance.

Example

height : 1.0 ;

oxide_permittivity Simple Attribute

The oxide_permittivity attribute specifies the oxide permittivity for the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

oxide_permittivity : value

float

;

...

}

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Syntax for Groups in the resource Group 3-31

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value

A floating-point number representing the permittivity.

Example

oxide_permittivity : 3.9 ;

oxide_thickness Simple Attribute

The oxide_thickness attribute specifies the oxide thickness for the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

oxide_thickness : value

float

;

...

}

float

A floating-point number representing the thickness.

Example

oxide_thickness : 2.0 ;

res_per_sq Simple Attribute

The res_per_sq attribute specifies the resistance unit area of a poly layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

res_per_sq : value

float

;

...

}

value

A floating-point number representing the resistance value.

Example

res_per_sq : 1.200e-01 ;

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shrinkage Simple Attribute

The shrinkage attribute specifies the total distance by which the wire width on the layer

shrinks or expands. The shrinkage parameter is a sum of the shrinkage for each side of the

wire. The post-shrinkage wire width represents the final processed silicon width as

calculated from the drawn silicon width in the design database.

Note:

Do not specify a value for the

shrinkage attribute or shrinkage_table group if you

specify a value for the

process_scale_factor attribute.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

shrinkage : value

float

;

...

}

value

A floating-point number representing the distance. A positive number represents

shrinkage; a negative number represents expansion.

Example

shrinkage : 0.00046 ;

thickness Simple Attribute

The thickness attribute specifies the thickness of the routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

thickness : value

float

;

...

}

value

A floating-point number representing the thickness.

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Example

thickness : 0.02 ;

conformal_lateral_oxide Complex Attribute

The conformal_lateral_oxide attribute specifies values for the thickness and permittivity

of a layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

conformal_lateral_oxide(value_1

float

,value_2

float

value_3

float

, value_4

float

) ;

...

}

value_1

A floating-point number that represents the oxide thickness.

value_2

A floating-point number that represents the topwall thickness.

value_3

A floating-point number that represents the sidewall thickness.

value_4

A floating-point number that represents the oxide permittivity.

Example

conformal_lateral_oxide (0.2, 0.3, 0.21, 3.5) ;

lateral_oxide Complex Attribute

The lateral_oxide attribute specifies values for the thickness and permittivity of a layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

poly_layer(layer_name

) {

lateral_oxide(thickness

float

, permittivity

float

) ;

...

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Syntax for Groups in the resource Group 3-34

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}

thickness

A floating-point number that represents the oxide thickness.

permittivity

A floating-point number that represents the oxide permittivity.

Example

lateral_oxide (0.024, 3.6) ;

max_current_ac_absavg Group

Use this group to specify the absolute average value for the AC current that can pass

through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff () {

...

max_current_ac_absavg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_absavg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-35

Chapter 3: Specifying Groups in the resource Group

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max_current_ac_avg Group

Use this group to specify an average value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff () {

...

max_current_ac_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_avg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_peak Group

Use this group to specify a peak value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff () {

...

max_current_ac_peak(template_name

) {

...

}

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template_name

The name of the contact layer.

Example

max_current_ac_peak() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_rms Group

Use this group to specify a root mean square value for the AC current that can pass through

a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff () {

...

max_current_ac_rms(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_rms() {

...

}

Complex Attributes

index_1

index_2

index_3

values

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Syntax for Groups in the resource Group 3-37

Chapter 3: Specifying Groups in the resource Group

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max_current_dc_avg Group

Use this group to specify an average value for the DC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

pdiff () {

...

max_current_dc_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_dc_avg() {

...

}

Complex Attributes

index_1

index_2

values

routing_layer Group

Use this group to specify the routing layer name and properties.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

...

}

layer_name

The name of the routing layer.

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Example

routing_layer(m1) {

...

}

Simple Attributes

avg_lateral_oxide_permittivity

avg_lateral_oxide_thickness

baseline_temperature

cap_multiplier

cap_per_sq

coupling_cap

default_routing_width

edgecapacitance

field_oxide_permittivity

field_oxide_thickness

fill_active_spacing

fringe_cap

height

inductance_per_dist

max_current_density

max_length

max_observed_spacing_ratio_for_lpe

max_width

min_area

min_enclosed_area

min_enclosed_width

min_fat_wire_width

min_fat_via_width

min_length

min_width

min_wire_split_width

offset

oxide_permittivity

oxide_thickness

pitch

process_scale_factor

res_temperature_coefficient

routing_direction

same_net_min_spacing

shrinkage

spacing

thickness

u_shaped_wire_spacing

wire_extension

wire_extension_range_check_connect_only

wire_extension_range_check_corner_only

Complex Attribute

conformal_lateral_oxide

lateral_oxide

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min_extension_width

min_shape_edge

plate_cap

ranged_spacing

spacing_check_style

stub_spacing

Groups

end_of_line_spacing_rule

extension_via_rule

max_current_ac_absavg

max_current_ac_avg

max_current_ac_peak

max_current_ac_rms

max_current_dc_avg

min_edge_rule

min_enclosed_area_table

notch_rule

resistance_table

shrinkage_table

spacing_table

wire_extension_range_table

avg_lateral_oxide_permittivity Simple Attribute

This attribute specifies a value representing the average lateral oxide permittivity.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

avg_lateral_oxide_permittivity : value

float

;

...

}

permittivity

A floating-point number that represents the lateral oxide permittivity.

Example

avg_lateral_oxide_permittivity (0.0 ) ;

avg_lateral_oxide_thickness Simple Attribute

This attribute specifies a value representing the average lateral oxide thickness.

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Syntax for Groups in the resource Group 3-40

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

avg_lateral_oxide_thickness : value

float

;

...

}

thickness

A floating-point number that represents the lateral oxide thickness.

Example

avg_lateral_oxide_thickness (0.0) ;

baseline_temperature Simple Attribute

This attribute specifies a baseline operating condition temperature.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

baseline_temperature : value

float

;

...

}

value

A floating-point number representing the temperature.

Example

baseline_temperature : 60.0 ;

cap_multiplier Simple Attribute

Use the cap_multiplier attribute to specify a scaling factor for interconnect capacitance to

account for changes in capacitance due to nearby wires.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

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cap_multiplier : value

float

;

...

}

value

A floating-point number representing the scaling factor.

Example

cap_multiplier : 2.0

cap_per_sq Simple Attribute

The cap_per_sq attribute specifies the substrate capacitance per unit area of a routing

layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

cap_per_sq : value

float

;

...

}

value

A floating-point number that represents the capacitance for a square unit of wire, in

picofarads per square distance unit.

Example

cap_per_sq : 5.909e-04 ;

coupling_cap Simple Attribute

The coupling_cap attribute specifies the coupling capacitance per unit length between

parallel wires on the same layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

coupling_cap : value

float

;

...

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}

value

A floating-point number that represents the capacitance value.

Example

coupling_cap: 0.000019 ;

default_routing_width Simple Attribute

The default_routing_width attribute specifies the minimal routing width (default) for

wires on the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

default_routing_width : value

float

;

...

}

value

A positive floating-point number representing the default routing width.

Example

default_routing : 4.400e-01 ;

edgecapacitance Simple Attribute

The edgecapacitance attribute specifies the total peripheral capacitance per unit length of

a wire on the routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

edgecapacitance : value

float

;

...

}

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Syntax for Groups in the resource Group 3-43

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value

A floating-point number that represents the capacitance per unit length value.

Example

edgecapacitance : 0.00065 ;

field_oxide_permittivity Simple Attribute

The field_oxide_permittivity attribute specifies the relative permittivity of the field

oxide.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

field_oxide_permittivity : value

float

;

...

}

value

A positive floating-point number representing the relative permittivity.

Example

field_oxide_permittivity : 3.9 ;

field_oxide_thickness Simple Attribute

The field_oxide_thickness attribute specifies the field oxide thickness.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

field_oxide_thickness : value

float

;

...

}

value

A positive floating-point number in distance units.

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Syntax for Groups in the resource Group 3-44

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Example

field_oxide_thickness : 0.5 ;

fill_active_spacing Simple Attribute

The fill_active_spacing attribute specifies the spacing between fill metal and active

geometry.

Syntax

phys_library(value

float

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

fill_active_spacing : value

float

;

...

}

value

A floating-point number that represents the spacing.

Example

fill_active_spacing : 0.0 ;

fringe_cap Simple Attribute

The fringe_cap attribute specifies the fringe (sidewall) capacitance per unit length of a

routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

fringe_cap : value

float

;

...

}

value

A floating-point number that represents the capacitance value.

Example

fringe_cap : 0.00023 ;

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Syntax for Groups in the resource Group 3-45

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height Simple Attribute

The height attribute specifies the distance from the top of the substrate to the bottom of the

routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

height : value

float

;

...

}

value

A floating-point number representing the distance.

Example

height : 1.0 ;

inductance_per_dist Simple Attribute

The inductance_per_dist attribute specifies the inductance per unit length of a routing

layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

inductance_per_dist : value

float

;

...

}

value

A floating-point number that represents the inductance value.

Example

inductance_per_dist : 0.0029 ;

max_current_density Simple Attribute

The max_current_density attribute specifies the maximum current density for a contact.

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Syntax for Groups in the resource Group 3-46

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

max_current_density : value

float

;

...

}

value

A floating-point number that represents, in amperes per centimeter, the maximum

current density the contact can carry.

Example

max_current_density : 0.0 ;

max_length Simple Attribute

The max_length attribute specifies the maximum length of wire segments on the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

max_length : value

float

;

...

}

value

A floating-point number that represents wire segment length.

Example

max_length : 0.0 ;

max_observed_spacing_ratio_for_lpe Simple Attribute

This attribute specifies the maximum wire spacing for layer parasitic extraction (LPE) when

calculating intracapacitance.

Use the true spacing value for calculating intracapacitance when the spacing between all

wires reflects the following equation:

distances < spacing * max_observed_spacing_ratio_for_lpe

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Syntax for Groups in the resource Group 3-47

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Use a calculated value as shown for calculating intracapacitance when the spacing between

all wires reflects the following equation.

distances > (spacing * max_observed_spacing_ratio_for_lpe)

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

max_observed_spacing_ratio_for_lpe : value

float

;

...

}

value

A floating-point number that represents the distance.

Example

max_observed_spacing_ratio_for_lpe : 3.0 ;

max_width Simple Attribute

The max_width attribute specifies the maximum width of wire segments on the layer for

DRC.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

max_width : value

float

;

...

}

value

A floating-point number that represents wire segment width.

Example

max_width : 0.0 ;

min_area Simple Attribute

The min_area attribute specifies the minimum metal area for the given routing layer.

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Syntax for Groups in the resource Group 3-48

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_area : value

float

;

...

}

value

A floating-point number that represents the minimum metal area.

Example

min_area : 0.0 ;

min_enclosed_area Simple Attribute

The min_enclosed_area attribute specifies the minimum metal area, enclosed by

ring-shaped wires or vias, for the given routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_enclosed_area : value

float

;

...

}

value

A floating-point number that represents the minimum metal area.

Example

min_enclosed_area : 0.14 ;

min_enclosed_width Simple Attribute

The min_enclosed_width attribute specifies the minimum metal width for the given routing

layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

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Syntax for Groups in the resource Group 3-49

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routing_layer(layer_name

) {

min_enclosed_width : value

float

;

...

}

value

A floating-point number that represents the minimum metal width.

Example

min_enclosed_width : 0.14 ;

min_fat_wire_width Simple Attribute

The min_fat_wire_width attribute specifies the minimal wire width that defines whether a

wire is a fat wire.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_fat_wire_width : value

float

;

...

}

value

A floating-point number that represents the minimal wire width.

Example

min_fat_wire_width : 0.0 ;

min_fat_via_width Simple Attribute

The min_fat_via_width attribute specifies a threshold value for using the fat wire spacing

rule instead of the default spacing rule

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_fat_via_width : value

float

;

...

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}

value

A floating-point number that represents the threshold value.

Example

min_fat_via_width : 0.0 ;

min_length Simple Attribute

The min_length attribute specifies the minimum length of wire segments on the layer for

DRC.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_length : value

float

;

...

}

value

A floating-point number that represents the minimum wire segment length.

Example

min_length : 0.202 ;

min_width Simple Attribute

The min_width attribute specifies the minimum width of wire segments on the layer for

DRC.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_width : value

float

;

...

}

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Syntax for Groups in the resource Group 3-51

Chapter 3: Specifying Groups in the resource Group

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value

A floating-point number that represents the minimum wire segment width.

Example

min_width : 0.202 ;

min_wire_split_width Simple Attribute

This attribute specifies the minimum wire width for split wires.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_wire_split_width : value

float

;

...

}

value

A floating-point number that represents the minimum wire split width.

Example

min_wire_split_width : 0.202 ;

offset Simple Attribute

The offset attribute specifies the offset distance from the placement grid to the routing grid.

The default is one half the routing pitch value.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

offset : value

float

;

...

}

value

A floating-point number representing the distance.

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Syntax for Groups in the resource Group 3-52

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Example

offset : 0.0025 ;

oxide_permittivity Simple Attribute

The oxide_permittivity attribute specifies the permittivity for the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

oxide_permittivity : value

float

;

...

}

value

A floating-point number representing the permittivity.

Example

oxide_permittivity : 3.9 ;

oxide_thickness Simple Attribute

The oxide_thickness attribute specifies the oxide thickness for the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

oxide_thickness : value

float

;

...

}

value

A floating-point number representing the thickness.

Example

oxide_thickness : 1.33 ;

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Syntax for Groups in the resource Group 3-53

Chapter 3: Specifying Groups in the resource Group

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pitch Simple Attribute

The pitch attribute specifies the track distance (center point to center point) of the detail

routing grid for a standard-cell routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

pitch : value

float

;

...

}

value

A floating-point number representing the specified distance.

Example

pitch : 8.400e-01 ;

process_scale_factor Simple Attribute

This attribute specifies the factor to use before RC calculation to scale the length, width, and

spacing.

Note:

Do not specify a value for the process_scale_factor attribute if you specify a value for the

shrinkage attribute or shrinkage_table group.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

process_scale_factor : value

float

;

...

}

value

A floating-point number representing the scaling factor.

Example

process_scale_factor : 0.95 ;

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res_per_sq Simple Attribute

The res_per_sq attribute specifies the resistance unit area of a routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

res_per_sq : value

float

;

...

}

value

A floating-point number representing the resistance value.

Example

res_per_sq : 1.200e-01 ;

res_temperature_coefficient Simple Attribute

Use the temperatureCoeff attribute to define the coefficient of the first-order correction to

the resistance per square when the operating temperature is not equal to the nominal

temperature at which the resistance per square variables are defined.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

res_temperature_coefficient : value

float

;

...

}

value

A floating-point number representing the temperature coefficient.

Example

res_temperature_coefficient : 0.00 ;

routing_direction Simple Attribute

The routing_direction attribute specifies the preferred direction for routing wires.

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Syntax for Groups in the resource Group 3-55

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

routing_direction : value

enum

;

...

}

value

Valid values are

horizontal and vertical.

Example

routing_direction : horizontal ;

same_net_min_spacing Simple Attribute

This attribute specifies a smaller spacing distance rule than the default rule for two shapes

belonging to the same net.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

same_net_min_spacing : value

float

;

...

}

value

A floating-point number representing the spacing distance.

Example

same_net_min_spacing : 0.04 ;

shrinkage Simple Attribute

The shrinkage attribute specifies the total distance by which the wire width on the layer

shrinks or expands. The shrinkage parameter is a sum of the shrinkage for each side of the

wire. The postshrinkage wire width represents the final processed silicon width as calculated

from the drawn silicon width in the design database.

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Syntax for Groups in the resource Group 3-56

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Note:

Do not specify a value for the

shrinkage attribute or shrinkage_table group if you

specify a value for the

process_scale_factor attribute.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

shrinkage : value

float

;

...

}

value

A floating-point number representing the distance. A positive number represents

shrinkage; a negative number represents expansion.

Example

shrinkage : 0.00046 ;

spacing Simple Attribute

The spacing attribute specifies the minimal (default) value for different net (edge to edge)

spacing for regular wiring on the layer. This spacing value applies to all routing widths unless

overridden by the

ranged_spacing attribute in the same routing_layer group or by the

wire_rule group.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

spacing : value

float

;

...

}

value

A floating-point number representing the minimal different net spacing value.

Example

spacing : 3.200e-01 ;

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Syntax for Groups in the resource Group 3-57

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thickness Simple Attribute

The thickness attribute specifies the nominal thickness of the routing layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

thickness : value

float

;

...

}

value

A floating-point number representing the thickness.

Example

thickness : 0.02 ;

u_shaped_wire_spacing Simple Attribute

The u_shaped_wire_spacing attribute specifies that a u-shaped notch requires more

spacing between wires than the value of the

spacing attribute allows.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

u_shaped_wire_spacing : value

float

;

...

}

value

A floating-point number that represents the spacing value.

Example

u_shaped_wire_spacing : 0.0 ;

wire_extension Simple Attribute

The wire_extension attribute specifies the distance for extending wires at vias.

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Syntax

phys_library(library_nameid) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

wire_extension : value

float

;

...

}

value

A floating-point number that represents the wire extension value. A zero value specifies

no wire extension. A nonzero value must be at least half the routing width for the layer.

Example

wire_extension : 0.025 ;

wire_extension_range_check_connect_only

Simple Attribute

This attribute specifies whether the projection length requires wide wire spacing.

Syntax

phys_library(library_nameid) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

wire_extension_range_check_connect_only : Boolean ;

...

}

value

Valid values are true and false.

Example

wire_extension_range_check_connect_only : true ;

wire_extension_range_check_corner

Simple Attribute

This attribute specifies whether the projection length requires wide wire spacing.

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Syntax

phys_library(library_nameid) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

wire_extension_range_check_corner : Boolean ;

...

}

Boolean

Valid values are true and false.

Example

wire_extension_range_check_corner : true ;

conformal_lateral_oxide Complex Attribute

This attribute specifies values for the thickness and permittivity of a layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

conformal_lateral_oxide(value_1

float

, value_2

float

value_3

float

, value_4

float

,) ;

...

}

value_1

A floating-point number that represents the oxide thickness.

value_2

A floating-point number that represents the topwall thickness.

value_3

A floating-point number that represents the sidewall thickness.

value_4

A floating-point number that represents the oxide permittivity.

Example

conformal_lateral_oxide (0.2, 0.3, 0.21, 3.6) ;

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lateral_oxide Complex Attribute

The lateral_oxide attribute specifies values for the thickness and permittivity of a layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

lateral_oxide(thickness

float

, permittivity

float

) ;

...

}

thickness

A floating-point number that represents the oxide thickness.

permittivity

A floating-point number that represents the oxide permittivity.

Example

lateral_oxide (0.)4, 3.9) ;

min_extension_width Complex Attribute

The min_extension_width attribute specifies the rules for a protrusion.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_extension_width (value_1

float

value_2

float

,value_3

float

);

...

}

value_1

A floating-point number that represents minimum wire width.

value_2

A floating-point number that represents the maximum extension length.

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value_3

A floating-point number that represents the minimum extension width.

Example

min_extension_width () ;

min_shape_edge Complex Attribute

For a polygon, this attribute specifies the maximum number of edges of minimum edge

length.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_shape_edge (length

float

, edges

int

);

...

}

length

A floating-point number that represents the minimum length of a polygon edge.

edges

An integer that represents the maximum number of polygon edges.

Example

min_shape_edge(0.02, 3) ;

plate_cap Complex Attribute

The plate_cap attribute specifies the interlayer capacitance per unit area when a wire on

the first routing layer overlaps a wire on the second routing layer.

Note:

The

plate_cap statement must follow all the routing_layer statements and precede

the

routing_wire_model statements.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

plate_cap(PCAP_la_lb

float

, PCAP_la_lb

float

PCAP_ln-1_ln

float

) ;

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...

}

PCAP_la_lb

Represents a floating-point number that specifies the plate capacitance per unit area

between two routing layers, layer a and layer b. The number of PCAP values is

determined by the number of previously defined routing layers. You must specify every

combination of routing layer pairs based on the order of the routing layers. For example,

if the layers are defined as substrate, layer1, layer2, and layer3, then the PCAP values

are defined in

PCAP_l1_l2, PCAP_l1_l3, and PCAP_l2_l3.

Example

The example shows a

plate_cap statement for a library with four layers. The values are

indexed by the routing layer order.

plate_cap(0.35, 0.06, 0.0, 0.25, 0.02, 0.15) ;

/* PCAP_1_2, PCAP_1_3, PCAP_1_4, PCAP_2_3, PCAP_2_4, PCAP_3_4 */

ranged_spacing Complex Attribute

The ranged_spacing attribute specifies the different net spacing (edge to edge) for regular

wiring on the layer. You can also use the

ranged_spacing attribute to specify the minimal

spacing for a particular routing width range of the metal. You can use more than one

ranged_spacing attribute to specify spacings for different ranges.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

ranged_spacing(min_width

float

, max_width

float

spacing

float

);

...

}

min_width, max_width

Floating-point numbers that represent the minimum and maximum routing width range.

spacing

A floating-point number that represents the spacing.

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Example

ranged_spacing(2.5, 5.5, 1.3) ;

spacing_check_style Complex Attribute

The spacing_check attribute specifies the minimum distance.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

spacing_check_style : check_style_name

enum

;

...

}

check_style_name

Valid values are

manhattan and diagonal.

Example

spacing_check_style : diagonal ;

stub_spacing Complex Attribute

The stub_spacing attribute specifies the distances required between the edges of two

objects on a layer when the distance that the objects run parallel to each other is less than

or equal to a specified threshold.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

stub_spacing(layer_name

) {

stub_spacing (spacing

float

, max_length_threshold

float

min_wire_width

float

, max_wire_width

float

);

...

}

spacing

A floating-point number that is less than the minimum spacing value specified for the

layer.

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max_length_threshold

A floating-point number that represents the maximum distance that two objects on the

layer can run parallel to each other.

min_wire_width

A floating-point number that represents the minimum spacing to a neighbor wire

(optional).

max_wire_width

A floating-point number that represents the maximum spacing to a neighbor wire

(optional).

Example

stub_spacing(1.05, 0.08)

end_of_line_spacing_rule Group

Use the end_of_line_spacing_rule attribute to specify the spacing between a stub wire

and other wires.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

end_of_line_spacing_rule() {

...

}

Simple Attributes

end_of_line_corner_keepout_width

end_of_line_edge_checking

end_of_line_metal_max_width

end_of_line_min_spacing

max_wire_width

Example

end_of_line_spacing_rule () {

...

}

end_of_line_corner_keepout_width Simple Attribute

This attribute specifies the corner keepout width.

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

end_of_line_spacing_rule() {

end_of_line_corner_keepout_width : value

Boolean

;

...

}

value

Valid values are 1 and 0.

Example

end_of_line_corner_keepout_width : 0.0 ;

end_of_line_edge_checking Simple Attribute

This attribute specifies the number of edges to check.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

end_of_line_spacing_rule() {

end_of_line_edge_checking : value

enum

;

...

}

value

Valid values are one_edge, two_edges, and three_edges.

Example

end_of_line_edge_checking

end_of_line_metal_max_width Simple Attribute

The maximum distance between two objects on a layer.

Syntax

phys_library(library_name

) {

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resource(architecture

enum

) {

routing_layer(layer_name

) {

end_of_line_spacing_rule() {

end_of_line_metal_max_width : value

float

;

...

}

value

A floating-point number representing the width.

Example

end_of_line_metal_max_width

end_of_line_min_spacing Simple Attribute

This attribute specifies the minimum distance required between the parallel edges of two

objects on the layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

end_of_line_spacing_rule() {

end_of_line_min_spacing :value

float

;

...

}

value

A floating-point number representing the spacing.

Example

end_of_line_min_spacing : 0.0 ;

max_wire_width Simple Attribute

Use this attribute to specify the maximum wire width for the spacing rule.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

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routing_layer(layer_name

) {

end_of_line_spacing_rule() {

max_wire_width :value

float

;

...

}

value

A floating-point number representing the width.

Example

max_wire_width

extension_via_rule Group

Use this group to define specific via and minimum cut numbers for a given fat metal width

and extension range.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

extension_via_rule() {

...

}

Simple Attribute

related_layer

Groups

min_cuts_table

reference_cut_table

Example

extension_via_rule ( ) {

...

}

related_layer

The

related_layer attribute specifies the contact layer to which this rule applies.

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

extension_via_rule() {

related_layer : layer_name

;

...

}

layer_name

A string value representing the layer name.

Example

related_layer : ;

min_cuts_table Group

Use this group to specify the minimum number of vias.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

extension_via_rule() {

min_cuts_table (template_name

) {

index_1("value

float

, value

float

, ...") ;

index_2("value

float

, value

float

, ...") ;

values ("value

float

, value

float

, ...") ;

}

wire_lut_template_name

The

wire_lut_template name.

Complex Attributes

index_1

index_2

values

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index_1 and index_2 Complex Attributes

These attributes specify the default indexes.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

extension_via_rule() {

min_cuts_table(wire_lut_template_name

) {

index_1 ("value

float

, value

float

, ...") ;

index_2 ("value

float

, value

float

, ...") ;

values ("value

float

, value

float

, ...") ;

}

Example

extension_via_rule (template_name) {

index_1 ( "0.6. 0.8, 1.2" ) ;

index_2 ( "0.6, 0.8, 1.0" ) ;

values ( "0.07, 0.08, 0.09" ) ;

reference_cut_table Group

Use this group to specify a table of predefined via values.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

extension_via_rule(via_array_lut_template_name

) {

reference_cut_table (wire_lut_template_name

) {

index_1("value

float

, value

float

, ...") ;

index_2("value

float

, value

float

, ...") ;

values ("value

float

, value

float

, ...") ;

}

via_array_lut_template_name

The

via_array_lut_template name.

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Complex Attributes

index_1

index_2

values

index_1 and index_2 Complex Attributes

These attributes specify the default indexes.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

extension_via_rule() {

index_1 ("value

float

, value

float

, value

float

, ...") ;

index_2 ("value

float

, value

float

, value

float

, ...") ;

values ("value

float

, value

float

, value

float

, ...") ;

}

Example

extension_via_rule (template_name) {

index_1 ( "0.6. 0.8, 1.2" ) ;

index_2 ( "0.6, 0.8, 1.0" ) ;

values ( "0.07, 0.08, 0.09" ) ;

max_current_ac_absavg Group

Use this group to specify the absolute average value for the AC current that can pass

through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer () {

...

max_current_ac_absavg(template_name

) {

...

}

template_name

The name of the contact layer.

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Example

max_current_ac_absavg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_avg Group

Use this group to specify an average value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer () {

...

max_current_ac_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_avg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_peak Group

Use this group to specify a peak value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

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resource(architecture

enum

) {

routing_layer () {

...

max_current_ac_peak(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_peak() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_rms Group

Use this group to specify a root mean square value for the AC current that can pass through

a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer () {

...

max_current_ac_rms(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_rms() {

...

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}

Complex Attributes

index_1

index_2

index_3

values

max_current_dc_avg Group

Use this group to specify an average value for the DC current that can pass through a cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer () {

...

max_current_dc_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_dc_avg() {

...

}

Complex Attributes

index_1

index_2

values

min_edge_rule Group

Use the min_edge_rule group to specify the minimum edge length rules.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_edge_rule() {

...

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}

Example

min_edge_rule () {

...

}

Simple Attributes

concave_corner_required

max_number_of_min_edges

max_total_edge_length

min_edge_length

concave_corner_required Simple Attribute

This attribute specifies whether a concave corner triggers a violation of the minimum edge

length rules.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_edge_rule() {

concave_corner_required : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

concave_corner_required : TRUE ;

max_number_of_min_edges Simple Attribute

This attribute specifies the maximum number of consecutive short (minimum) edges.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

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min_edge_rule() {

max_number_of_min_edges : value

int

;

...

}

value

An integer value representing the number of edges.

Example

max_number_of_min_edges : 1 ;

max_total_edge_length Simple Attribute

This attribute specifies the maximum allowable total edge length.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_edge_rule() {

max_total_edge_length : value

float

;

...

}

value

A floating-point number representing the edge length.

Example

max_total_edge_length : 0.0 ;

min_edge_length Simple Attribute

The

min_edge_length attribute specifies the length for defining short edges

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_edge_rule() {

min_edge_length : value

float

;

...

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}

term

A floating-point number representing the edge length.

Example

min_edge_length : 0.0 ;

min_enclosed_area_table Group

Use this group to specify a range of values for an enclosed area.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

min_enclosed_area_table(wire_lut_template_name

) {

...

}

wire_lut_template_name

The

wire_lut_template name.

Example

min_enclosed_area_table ( ) {

...

}

Complex Attributes

index_1

values

index_1 Complex Attribute

The

index_1 attribute specifies the default indexes.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

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min_enclosed_area_table(wire_lut_template_name

) {

index_1 ("value

float

, value

float

, value

float

, ...")

index_2 ("value

float

, value

float

, value

float

, ...")

values ("value

float

, value

float

, value

float

, ...") ;

}

Example

min_enclosed_area_table (template_name) {

index_1 ( "0.6. 0.8, 1.2" ) ;

values ( "0.07, 0.08, 0.09" ) ;

notch_rule Group

Use the notch_rule group to specify the notch rules.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

notch_rule() {

...

}

Example

notch_rule () {

...

}

Simple Attributes

min_notch_edge_length

min_notch_width

min_notch_edge_length Simple Attribute

This attribute specifies the notch height.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

notch_rule() {

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min_notch_edge_length : value

float

;

...

}

value

A floating-point number representing the notch height.

Example

min_notch_edge_length : 0.4 ;

min_notch_width Simple Attribute

This attribute specifies the notch width.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

notch_rule() {

min_notch_width : value

float

;

...

}

value

A floating-point number representing the notch width.

Example

min_notch_width : 0.26 ;

min_wire_width Simple Attribute

This attribute specifies the minimum wire width.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

notch_rule() {

min_wire_width : value

float

;

...

}

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}

value

A floating-point number representing the wire width.

Example

min_wire_width : 0.26 ;

resistance_table Group

Use this group to specify an array of values for sheet resistance.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

resistance_table(template_name

) {

...

}

template_name

The name of a

resistance_lut_template defined at the phys_library level.

Example

resistance_table ( ) {

...

}

Complex Attributes

index_1

index_2

values

index_1 and index_2 Complex Attributes

These attributes specify the default indexes.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

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resistance_table(template_name

) {

index_1 ("value

float

, value

float

, value

float

, ...")

index_2 ("value

float

, value

float

, value

float

, ...")

values ("value

float

, value

float

, value

float

, ...") ;

}

Example

resistance_table (template_name) {

index_1 ( "0.6. 0.8, 1.2" ) ;

index_2 ( "0.6, 0.8, 1.0" ) ;

values ( "0.07, 0.08, 0.09" ) ;

shrinkage_table Group

Use this group to specify a lookup table template.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

shrinkage_table(template_name

) {

...

}

template_name

The name of a

shrinkage_lut_template defined at the phys_library level.

Example

shrinkage_table (shrinkage_lut) {

...

}

Complex Attributes

index_1

index_2

values

index_1 and index_2 Complex Attributes

These attributes specify the default indexes.

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Syntax

phys_library(library_name

) {

...

shrinkage_table (template_name

) {

index_1 (value

float

, value

float

, value

float

, ...);

index_2 (value

float

, value

float

, value

float

, ...);

values ("value

float

, value

float

, value

float

", "...", "...") ;

...

}

...

}

value, value, value, ...

Floating-point numbers that represent the indexes for this shrinkage table and the

shrinkage table values.

Example

shrinkage_table (shrinkage_template_name) {

values ("0.02, 0.03, 0.04", "0.0,1 0.02, 0.03" );

}

spacing_table Group

Use this group to specify a lookup table template.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

spacing_table(template_name

) {

...

}

template_name

The name of a

spacing_lut_template defined at the phys_library level.

Example

spacing_table (spacing_template_1) {

...

}

Complex Attributes

index_1

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index_2

index_3

values

index_1, index_2, index_3, and values Complex Attributes

These attributes specify the indexes and values for the spacing table.

Syntax

phys_library(library_name

) {

...

spacing_table (template_name

) {

index_1 (value

float

, value

float

, value

float

, ...);

index_2 (value

float

, value

float

, value

float

, ...);

index_3 (value

float

, value

float

, value

float

, ...);

values ("value

float

, value

float

, value

float

", "...",

"...") ;

}

...

}

value, value, value, ...

Floating-point numbers that represent the indexes and spacing table values.

Example

spacing_table (spacing_template_1) {

index_1 (0.0, 0.0, 0.0, 0.0);

index_2 (0.0, 0.0, 0.0, 0.0);

index_3 (0.0, 0.0, 0.0, 0.0);

values (0.0, 0.0, 0.0, 0.0);

}

wire_extension_range_table Group

Use this group to specify the length of a wire extension where the wide wire spacing must

be observed. A wire extension is a piece of thin or fat metal extended out from a wide wire.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_layer(layer_name

) {

wire_extension_range_table(template_name

) {

...

}

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template_name

The name of a

wire_lut_template defined at the phys_library level.

Example

wire_extension_range_table (wire_template_1) {

...

}

Complex Attributes

index_1

values

index_1 and values Complex Attributes

These attributes specify the wire width values and corresponding

wire_extension_range

values.

Syntax

phys_library(library_name

) {

...

wire_extension_range_table (template_name

) {

index_1 (value

float

, value

float

, value

float

, ...);

values ("value

float

, value

float

, value

float

", "...", "...") ;

}

...

}

value, value, value, ...

Floating-point numbers.

Example

wire_extension_range_table (wire_template_1) {

index_1 (0.4, 0.6, 0.8, 1.0);

values ( "0.1, 0.2, 0.3, 0.4" ) ;

}

routing_wire_model Group

A predefined routing wire ratio model that represents an estimation on interconnect

topology.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_wire_model(model_name

) {

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...

}

model_name

Specifies the name of the predefined routing wire model.

Example

routing_wire_model(mod1) {

...

}

Simple Attributes

wire_length_x

wire_length_y

Complex Attributes

adjacent_wire_ratio

overlap_wire_ratio

wire_ratio_x

wire_ratio_y

wire_length_x Simple Attribute

The wire_length_x attribute specifies the estimated average horizontal wire length in the

direction for a net.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_wire_model(model_name

) {

...

wire_length_x :value

float

;

...

}

value

A floating-point number that represents the average horizontal length.

Example

wire_length_x : 305.4 ;

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wire_length_y Simple Attribute

The wire_length_y attribute specifies the estimated average vertical wire lengths in the

direction for a net.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_wire_model(model_name

) {

...

wire_length_y : value

float

;

...

}

value

A floating-point number that represents the average vertical length.

Example

wire_length_y : 260.35 ;

adjacent_wire_ratio Complex Attribute

This attribute specifies the percentage of wiring on a layer that can run adjacent to wiring on

the same layer and still maintain the minimum spacing.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_wire_model(model_name

) {

...

adjacent_wire_ratio(value

float

, value

float

, ...) ;

...

}

value

Floating-point numbers that represent the percentage value. For example, two parallel

adjacent wires with the same length would have an

adjacent_wire_ratio value of 50.0

percent. For a library with n routing layers, the

adjacent_wire_ratio attribute has n

floating values representing the ratio on each routing layer.

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Example

In the case of a library with four routing layers:

adjacent_wire_ratio(35.6, 2.41, 19.8, 25.3) ;

overlap_wire_ratio Complex Attribute

This attribute specifies the percentage of the wiring on the first layer that overlaps the

second layer.

The following syntax example shows the order for the 20 entries required for a library with

five routing layers.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_wire_model(model_name

) {

overlap_wire_ratio(

V_1_2

float

, V_1_3

float

, V_1_4

float

, V_1_5

float

V_2_1

float

, V_2_3

float

, V_2_4

float

, V_2_5

float

V_3_1

float

, V_3_2

float

, V_3_4

float

, V_3_5

float

V_4_1

float

, V_4_2

float

, V_4_3

float

, V_4_5

float

V_5_1

float

, V_5_2

float

, V_5_3

float

, V_5_4

float

) ;

...

}

V_a_b

The overlap ratio that represents how much of the reference layer (a) is overshadowed

by another layer (b). The value of each V_a_b is a floating-point number from 0 to 100.0.

The sum of all V_a_n ratios must be less than or equal to 100.0. The order of V_a_b is

significant; it must be iteratively listed from the routing layer closest to the substrate.

Example

In the case of a library with five routing layers:

overlap_wire_ratio( 5, 15.5, 7.5, 10, \

6.5, 16, 8.5, 10.5, \

15, 5.5, 5, 15.5, \

7.5, 10, 6.5, 16, \

8.5, 10.5, 15, 5.5) ;

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wire_ratio_x Complex Attribute

The wire_ratio_x attribute specifies the percentage of total wiring in the horizontal

direction that you estimate to be on each layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_wire_model(model_name

) {

...

wire_ratio_x(value_1

float

, value_2

float

, value_3

float

, ...) ;

...

}

value_1, value_2, value_3, ...,

An array of floating-point numbers following the order of the routing layers, starting from

the one closest to the substrate. Each example is a floating-point number value from 0 to

100.0. For example, if there are four routing layers, then there are four floating-point

numbers.

Note:

The sum of the floating-point numbers must be 100.0.

Example

wire_ratio_x(25.0, 25.0, 25.0, 25.0) ;

wire_ratio_y Complex Attribute

The wire_ratio_y attribute specifies the percentage of total wiring in the vertical direction

that you estimate to be on each layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

routing_wire_model(model_name

) {

...

wire_ratio_y(value_1

float

, value_2

float

, value_3

float

, ...) ;

...

}

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value_1, value_2, value_3, ...,

An array of floating-point numbers following the order of the routing layers, starting from

the one closest to the substrate. Each example is a floating-point number value from 0 to

100.0. For example, if there are four routing layers, then there are four floating-point

numbers.

Note:

The sum of the floating-point numbers must be 100.0.

Example

wire_ratio_y(25.0, 25.0, 25.0, 25.0) ;

site Group

Defines the placement grid for macros.

Note:

Define a

site group or a tile group, but not both.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

site(site_name

) {

...

}

site_name

The name of the site.

Example

site(core) {

...

}

Simple Attributes

on_tile

site_class

symmetry

Complex Attribute

size

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on_tile Simple Attribute

The on_tile attribute specifies an associated tile name.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

site(site_name

) {

on_tile : tile_name

)

...

}

tile_name

The name of the tile.

Example

on_tile : ;

site_class Simple Attribute

The site_class attribute specifies what type of devices can be placed on the site.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

site(site_name

) {

site_class : value

enum

;

...

}

value

Valid values are

pad and core (default).

Example

site_class : pad ;

symmetry Simple Attribute

The symmetry attribute specifies the site symmetry. A site is considered asymmetrical,

unless explicitly specified otherwise.

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

site(site_name

) {

symmetry : value

enum

;

...

}

value

Valid values are

r, x, y, xy, and rxy.

where

Specifies symmetry about the x-axis

Specifies symmetry about the y-axis

Specifies symmetry in 90 degree counterclockwise rotation

Specifies symmetry about the x-axis and the y-axis

rxy

Specifies symmetry about the x-axis and the y-axis and in 90 degree counterclockwise

rotation increments

Example

symmetry : r ;

size Complex Attribute

The size attribute specifies the site dimension in normal orientation.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

site(site_name

) {

size(x_size

float

, y_size

float

) ;

...

}

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}

x_size, y_size

Floating-point numbers that specify the bounding rectangle size. The bounding rectangle

size must be a multiple of the placement grid.

Example

size(0.9, 7.2) ;

tile Group

Use this group to define the placement grid for macros.

Note:

Define a

site group or a tile group, but not both.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

tile (tile_name

) {

...

}

tile_name

The name of the tile.

Simple Attribute

tile_class

Complex Attribute

size

tile_class Simple Attribute

The tile_class attribute specifies the tile class.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

tile(site_name

) {

tile_class : value

enum

;

...

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}

value

Valid values are pad and core (default).

Example

tile_class : pad ;

size Complex Attribute

The size attribute specifies the site dimension in normal orientation.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

tile (site_name

) {

size(x_size

float

, y_size

float

) ;

...

}

x_size, y_size

Floating-point numbers that specify the bounding rectangle size. The bounding rectangle

size must be a multiple of the placement grid.

Example

size(0.9, 7.2) ;

via Group

Use this group to specify a via. You can use the via group to specify vias with any number

of layers.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

...

}

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via_name

The name of the via.

Example

via(via12) {

...

}

Simple Attributes

capacitance

inductance

is_default

is_fat_via

resistance

res_temperature_coefficient

top_of_stack_only

via_id

Groups

foreign

via_layer

capacitance Simple Attribute

The capacitance attribute specifies the capacitance per cut.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

capacitance : value

float

;

...

}

value

A floating-point number that represents the capacitance value.

Example

capacitance : 0.2 ;

inductance Simple Attribute

The inductance attribute specifies the inductance per cut.

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

inductance : value

float

;

...

}

value

A floating-point number that represents the inductance value.

Example

inductance : 0.5 ;

is_default Simple Attribute

The is_default attribute specifies the via as the default for the given layers.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

is_default : value

Boolean

;

...

}

value

Valid values are

TRUE and FALSE (default).

Example

is_default : TRUE ;

is_fat_via Simple Attribute

The is_fat_via attribute specifies that fat wire contacts are required when the wire width

is equal to or greater than the threshold specified. Specifies that this via is used by wide

wires

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

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via(via_name

) {

is_fat_via : value

Boolean

;

...

}

value

Valid values are

TRUE and FALSE (default).

Example

is_fat_via : TRUE ;

resistance Simple Attribute

The resistance attribute specifies the aggregate resistance per contact rectangle.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

resistance : value

float

;

...

}

value

A floating-point number that represents the resistance value.

Example

resistance : 0.0375 ;

res_temperature_coefficient Simple Attribute

This attribute specifies the coefficient of the first-order correction to the resistance per

square when the operating temperature does not equal the nominal temperature.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

res_temperature_coefficient : value

float

;

...

}

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}

value

A floating-point number that represents the coefficient.

Example

res_temperature_coefficient : 0.03 ;

top_of_stack_only Simple Attribute

This attribute specifies to use the via only on top of a via stack.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

top_of_stack_only : value

Boolean

;

...

}

value

Valid values are

TRUE and FALSE (default).

Example

top_of_stack_only : FALSE ;

via_id Simple Attribute

Use the via_id attribute to specify a number that identifies a device.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_id : value

int

;

...

}

value

Valid values are any integer between 1 and 255.

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Example

via_id : 255 ;

foreign Group

Use this group to specify which GDSII structure (model) to use when placing an instance of

this via.

Note:

Only one foreign reference is allowed for each via.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

foreign(foreign_object_name

) {

...

}

foreign_object_name

The name of the corresponding GDSII via (model).

Example

foreign(via34) {

...

}

Simple Attribute

orientation

Complex Attribute

origin

orientation Simple Attribute

The

orientation attribute specifies how you place the foreign GDSII object.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

foreign(foreign_object_name

) {

orientation : value

enum

;

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...

}

value

Valid values are

N (north), E (east), S (south), W (west), FN (flip north), FE (flip east), FS

(flip south), and

FW (flip west), as shown in Figure 3-3.

Figure 3-3 Orientation Examples

Example

orientation : FN ;

origin Complex Attribute

The

origin attribute specifies the via origin with respect to the GDSII structure (model). In

the physical library, the origin of a via is its center; in GDSII, the origin is 0,0.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

foreign(foreign_object_name

) {

...

origin(num_x

float

, num_y

float

) ;

}

N (north) E (east) S (south) W (west)

FW (flip west)FE (flip east)FN (flip north) FS (flip south)

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num_x, num_y

Numbers that specify the x- and y-coordinates.

Example

origin(-1, -1) ;

via_layer Group

Use this group to specify layer geometries on one layer of the via.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

...

}

layer_name

Specifies the layer on which the geometries are located.

Example

via_layer(m1) {

...

}

Simple Attributes

max_wire_width

min_wire_width

Complex Attributes

contact_spacing

contact_array_spacing

enclosure

max_cuts

min_cuts

rectangle

rectangle_iterate

max_wire_width Simple Attribute

Use this attribute along with the

min_wire_width attribute to define the range of wire

widths.

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

max_wire_width : value

float

;

...

}

value

A floating-point number representing the wire width.

Example

max_wire_width : 0.0 ;

min_wire_width Simple Attribute

Use this attribute along with the

max_wire_width attribute to define the range of wire

widths.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

min_wire_width : value

float

;

...

}

value

A floating-point number representing the wire width.

Example

min_wire_width : 0.0 ;

contact_array_spacing Complex Attribute

This attribute specifies the edge-to-edge spacing on a contact layer.

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

contact_array_spacing(value_x

float

, value_y

float

);

...

}

value_x, value_y

Floating-point numbers that represent the horizontal and vertical spacing between two

abutting contact arrays.

Example

contact_array_spacing (0.0, 0.0) ;

contact_spacing Complex Attribute

The

contact_spacing attribute specifies the center-to-center spacing for generating an

array of contact cuts in the via.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

contact_spacing(value_x

float

, value_y

float

);

...

}

x, y

Floating-point numbers that represent the spacing value in terms of the x distance and y

distance between the centers of two contact cuts.

Example

contact_spacing (0.0, 0.0) ;

enclosure Complex Attribute

The

enclosure attribute specifies an enclosure on a metal layer.

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

enclosure(value_x

float

, value_y

float

) ;

...

}

value_x, value_y

Floating-point numbers that represent the enclosure.

Example

enclosure (0.0, 0.0) ;

max_cuts Complex Attribute

The

max_cuts attribute specifies the maximum number of cuts on a contact layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

max_cuts(value_x

float

, value_y

float

) ;

...

}

value_x, value_y

Floating-point numbers that represent the maximum number of cuts in the horizontal and

vertical directions of a contact array.

Example

max_cuts (0.0, 0.0) ;

min_cuts Complex Attribute

The

min_cuts attribute specifies the minimum number of neighboring cuts allowed within a

specified space (range).

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

min_cuts(value_x

float

, value_y

float

) ;

...

}

value_x, value_y

Floating-point numbers that represent the minimum number of cuts in the horizontal and

vertical directions of a contact array.

Example

min_cuts (0.0, 0.0) ;

rectangle Complex Attribute

The

rectangle attribute specifies a rectangular shape for the via.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

rectangle(x1

float

, y1

float

, x2

float

) ;

...

}

x1, y1, x2, y2

Floating-point numbers that specify the coordinates for the diagonally opposite corners

of the rectangle.

Example

rectangle(-0.3. -0.3, 0.3, 0.3) ;

rectangle_iterate Complex Attribute

The

rectangle_iterate attribute specifies an array of rectangles in a particular pattern.

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-104

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Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via(via_name

) {

via_layer(layer_name

) {

rectangle_iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

, y1

float

, x2

float

, y2

float

)

...

}

num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Floating-point numbers that specify the value for spacing around the rectangles.

x1, y1; x2, y2

Floating-point numbers that specify the coordinates for the diagonally opposite corners

of the rectangles.

Example

rectangle_iterate(2, 2, 2.000, 4.000, 175.500, 1417.360,

176.500, 1419.140) ;

via_array_rule Group

Defines the specific via and minimum cut number for the different fat metal wire widths on

contact layer.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via_array_rule () {

...

}

Groups

min_cuts_table

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-105

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-105

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reference_cut_table

min_cuts_table Group

Use this group to specify the values for the lookup table.

Note:

Only one foreign reference is allowed for each via.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via_array_rule () {

min_cuts_table (template_name

) {

...

}

template_name

The

via_array_lut_template name.

Example

min_cuts_table (via34) {

...

}

Complex Attribute

index_1

index_2

values

index Complex Attribute

The

index attribute specifies the default indexes.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via_array_rule() {

min_cuts_table (template_name

) {

...

index(num_x

float

, num_y

float

) ;

}

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-106

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num_x, num_y

Numbers that specify the x- and y-coordinates.

Example

index (-1, -1) ;

reference_cut_table Group

Use this group to specify values for the lookup table.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via_array_rule () {

reference_cut_table (template_name

) {

...

}

template_name

The

via_array_lut_template name.

Example

reference_cut_table (via34) {

...

}

Complex Attribute

index_1

index_2

values

index Complex Attribute

The

index attribute specifies the default indexes.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

via_array_rule() {

reference_cut_table (template_name

) {

...

index(num_x

float

, num_y

float

) ;

}

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-107

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-107

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}

num_x, num_y

Numbers that specify the x- and y-coordinates.

Example

index (-1, -1) ;

Chapter 3: Specifying Groups in the resource Group

Syntax for Groups in the resource Group 3-108

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4-1

Specifying Attributes in the

topological_design_rules Group 4

You use the topological_design_rules group to specify the design rules for the

technology (such as minimum spacing and width).

The information in this chapter includes a description and syntax example for the attributes

that you can define within the

topological_design_rules group.

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-2

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Syntax for Attributes in the topological_design_rules Group

This chapter describes the attributes that you define in the topological_design_rules

group. The groups that you can define in the

topological_design_rules group are

described in Chapter 5.

topological_design_rules Group

Defines all the design rules that apply to the physical library.

Syntax

phys_library(library_name

) {

topological_design_rules() {

...

}

Note:

A name is not required for the

topological_design_rules group.

Example

topological_design_rules() {

...

}

Simple Attributes

antenna_inout_threshold

antenna_input_threshold

antenna_output_threshold

min_enclosed_area_table_surrounding_metal

Complex Attributes

contact_min_spacing

corner_min_spacing

diff_net_min_spacing

end_of_line_enclosure

min_enclosure

min_generated_via_size

min_overhang

same_net_min_spacing

Group

extension_wire_spacing_rule

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-3

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-3

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antenna_inout_threshold Simple Attribute

Use this attribute to specify the default (maximum) threshold (cumulative) value for the

antenna effect on inout pins. Use this attribute for parameter-based calculations only; that is,

it is not required when your library contains an

antenna_rule group.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_inout_threshold : value

float

;

...

}

value

A floating-point number that represents the global pin value.

Example

antenna_inout_threshold : 0.0 ;

antenna_input_threshold Simple Attribute

Use this attribute to specify the default (maximum) threshold (cumulative) value for the

antenna effect on input pins. Use this attribute for parameter-based calculations only; that is,

it is not required when your library contains an

antenna_rule group.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_input_threshold : value

float

;

...

}

value

A floating-point number that represents the global pin value.

Example

antenna_input_threshold : 0.0 ;

antenna_output_threshold Simple Attribute

Use this attribute to specify the default (maximum) threshold (cumulative) value for the

antenna effect on output pins. Use this attribute for parameter-based calculations only; that

is, it is not required when your library contains an

antenna_rule group.

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-4

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Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_output_threshold : value

float

;

...

}

value

A floating-point number that represents the global pin value.

Example

antenna_output_threshold : 0.0 ;

min_enclosed_area_table_surrounding_metal

Simple Attribute

Use this attribute to specify the minimum enclosed area.

Syntax

phys_library(library_name

) {

topological_design_rules() {

min_enclosed_area_table_surrounding_metal(value

enum

) ;

...

}

value

Valid values are

all_fat_wires and at_least_one_fat_wire.

Example

min_enclosed_area_table_surrounding_metal : all_fat_wires;

contact_min_spacing Complex Attribute

The contact_min_spacing attribute specifies the minimum spacing required between two

different contact layers on different nets.

Syntax

phys_library(library_name

) {

topological_design_rules() {

contact_min_spacing(layer1_name

, layer2_name

, value

float

) ;

...

}

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-5

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-5

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layer1_name, layer2_name

Specify the two contact layers. The layers can be equivalent or different.

value

A floating-point number that represents the spacing value.

Example

contact_min_spacing(cut01, cut12, 1)

corner_min_spacing Complex Attribute

The corner_min_spacing attribute specifies the spacing between two different contact

layers.

Note:

The

corner_min_spacing simple attribute in the cont_layer group specifies the

minimum distance between two vias.

Syntax

phys_library(library_name

) {

topological_design_rules() {

corner_min_spacing(layer1_name

, layer2_name

, value

float

) ;

...

}

layer1_name, layer2_name

Specify the two contact layers.

value

A floating-point number that represents the spacing value.

Example

corner_min_spacing () ;

end_of_line_enclosure Complex Attribute

The end_of_line_enclosure attribute defines an enclosure size to specify the end-of-line

rule for routing wire segments.

Syntax

phys_library(library_name

) {

topological_design_rules() {

end_of_line_enclosure(layer1_name

, layer2_name

, value

float

) ;

...

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-6

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}

layer1_name, layer2_name

Specify the metal layer and a contact layer, respectively.

value

A floating-point number that represents the spacing value.

Example

end_of_line_enclosure () ;

min_enclosure Complex Attribute

The min_enclosure attribute defines the minimum distance at which a layer must enclose

another layer when the two layers overlap.

Syntax

phys_library(library_name

) {

topological_design_rules() {

min_enclosure(layer1_name

, layer2_name

, value

float

) ;

...

}

layer1_name, layer2_name

Specify the metal layer and a contact layer, respectively.

value

A floating-point number that represents the spacing value.

Example

min_enclosure () ;

diff_net_min_spacing Complex Attribute

The diff_net_min_spacing attribute specifies the minimum spacing between a metal layer

and a contact layer.

Syntax

phys_library(library_name

) {

topological_design_rules() {

diff_net_min_spacing(layer1_name

, layer2_name

, value

float

) ;

...

}

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-7

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-7

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}

layer1_name, layer2_name

Specify the metal layer and a contact layer, respectively.

value

A floating-point number that represents the spacing value.

Example

diff_net_min_spacing () ;

min_generated_via_size Complex Attribute

Use this attribute to specify the minimum size for the generated via. All edges of a via must

lie on the grid defined by the x- and y-coordinates.

Syntax

phys_library(library_name

) {

topological_design_rules() {

min_generated_via_size(num_x

float

, num_y

float

) ;

...

}

num_x, num_y

Floating-point numbers that represent the minimum size for the x and y dimensions.

Example

min_generated_via_size(0.01, 0.01) ;

min_overhang Complex Attribute

Use this attribute to specify the minimum overhang for the generated via.

Syntax

phys_library(library_name

) {

topological_design_rules() {

min_overhang(layer1

string

, layer2

string

, value

float

) ;

...

}

layer1, layer2

The names of the two overhanging layers.

Chapter 4: Specifying Attributes in the topological_design_rules Group

Syntax for Attributes in the topological_design_rules Group 4-8

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value

A floating-point number that represents the minimum overhang value.

Example

min_overhang(0.01, 0.01) ;

same_net_min_spacing Complex Attribute

The same_net_min_spacing attribute specifies the minimum spacing required between

wires on a layer or on two layers in the same net.

Syntax

phys_library(library_name

) {

topological_design_rules() {

same_net_min_spacing(layer1_name

, layer2_name

, \

space

float

, is_stack

Boolean

) ;

...

}

layer1_name, layer2_name

Specify the two routing layers, which can be different layers or the same layer.

space

A floating-point number representing the spacing value.

is_stack

Valid values are

TRUE and FALSE. Set the value to TRUE to allow stacked vias at the

routing layer. When set to TRUE, the

same_net_min_spacing value can be 0 (complete

overlap) or the value held by the

min_spacing attribute; otherwise the value reflects the

rule.

Example

same_net_min_spacing(m2, m2, 0.4, FALSE)

5-1

Specifying Groups in the

topological_design_rules Group 5

You use the topological_design_rules group to specify the design rules for the

technology (such as minimum spacing and width).

This chapter describes the following groups:

• antenna_rule Group

• density_rule Group

• extension_wire_spacing_rule Group

• stack_via_max_current Group

• via_rule Group

• via_rule_generate Group

• wire_rule Group

• wire_slotting_rule Group

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-2

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Syntax for Groups in the topological_design_rules Group

The following sections describe the groups you can define in the

topological_design_rules group:

antenna_rule Group

Use this group to specify the methods for calculating the antenna effect.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

}

antenna_rule_name

The name of the

antenna_rule group.

Example

antenna_rule (antenna_metal3_only) {

...description...

}

Simple Attributes

adjusted_gate_area_calculation_method

adjusted_metal_area_calculation_method

antenna_accumulation_calculation_method

antenna_ratio_calculation_method

apply_to

geometry_calculation_method

pin_calculation_method

routing_layer_calculation_method

Complex Attribute

layer_antenna_factor

Groups

adjusted_gate_area

adjusted_metal_area

antenna_ratio

metal_area_scaling_factor

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-3

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-3

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adjusted_gate_area_calculation_method

Simple Attribute

Use this attribute to specify a factor to apply to the gate area.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

adjusted_gate_area_calculation_method : value

enum

;

...

}

value

Valid values are

max_diffusion_area and total_diffusion_area.

Example

adjusted_gate_area_calculation_method :max_diffusion_area;

adjusted_metal_area_calculation_method

Simple Attribute

Use this attribute to specify a factor to apply to the metal area.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

adjusted_metal_area_calculation_method : value

enum

;

...

}

value

Valid values are

max_diffusion_area and total_diffusion_area.

Example

adjusted_metal_area_calculation_method :

max_diffusion_area ;

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-4

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antenna_accumulation_calculation_method

Simple Attribute

Use this attribute to specify a method for calculating the antenna.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

antenna_accumulation_calculation_method:value

enum

;

...

}

value

Valid values are

single_layer, accumulative_ratio, and accumulative_area.

Example

antenna_accumulation_calculation_method : ;

antenna_ratio_calculation_method Simple Attribute

Use this attribute to specify a method for calculating the antenna.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

antenna_ratio_calculation_method : value

enum

;

...

}

value

Valid values are

infinite_antenna_ratio, max_antenna_ratio, and

total_antenna_ratio.

Example

antenna_ratio_calculation_method : total_antenna_ratio ;

apply_to Simple Attribute

The apply_to attribute specifies the type of pin geometry that the rule applies to.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-5

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-5

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Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

apply_to : value

enum

;

...

}

value

The valid values are

gate_area, gate_perimeter, and diffusion_area.

Example

apply_to : gate_area ;

geometry_calculation_method Simple Attribute

Use this attribute with the pin_calculation_method attribute to specify which geometries

are applied to which pins. See Ta b le 5 -1 for a matrix of the options.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

geometry_calculation_method : value

enum

;

pin_calculation_method : value

enum

;

...

}

value

The valid values are

all_geometries and connected_only.

Table 5-1 Calculating Geometries on Pins

geometry_calculation_method

values

pin_calculation_method

values

all_pins each_pin

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-6

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Example

geometry_calculation_method : connected_only ;

pin_calculation_method : all_pins ;

metal_area_scaling_factor_calculation_method

Simple Attribute

Use this attribute to specify which diffusion area to use for scaling the metal area.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

metal_area_scaling_factor_calculation_method : value

enum

;

...

}

value

The valid values are

max_diffusion_area and total_diffusion_area.

Example

metal_area_scaling_factor_calculation_method : total_diffusion_area ;

all_geometries All the geometries are

applied to all pins. The

connectivity analysis is not

performed. Pins share

antennas.

All the geometries of the net

are applied to every pin on the

net separately. The

connectivity analysis is not

performed. Antennas are not

shared by connected pins.

This is the most pessimistic

calculation.

connected_only Considers connected

geometries as well as

sharing. This is the most

accurate calculation.

Only the geometries

connected to the pin are

considered. Sharing of

antennas is not allowed.

Table 5-1 Calculating Geometries on Pins (continued)

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-7

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-7

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pin_calculation_method Simple Attribute

Use this attribute with the geometry_calculation_method attribute to specify which

geometries are applied to which pins. See Ta b l e 5- 1 for a matrix of the options.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

geometry_calculation_method : value

enum

;

pin_calculation_method : value

enum

;

...

}

value

The valid values are

all_pins and each_pin.

Example

geometry_calculation_method : connected_only ;

pin_calculation_method : all_pins ;

routing_layer_calculation_method Simple Attribute

Use this attribute to specify which property of the routing segments to use to calculate

antenna contributions.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

routing_layer_calculation_method : value

enum

;

...

}

value

The valid values are

side_wall_area, top_area, side_wall_and_top_area,

segment_length, and segment_perimeter.

Example

routing_layer_calculation_method : top_area ;

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-8

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layer_antenna_factor Complex Attribute

The layer_antenna_factor attribute specifies a factor in each routing or contact layer that

is multiplied to either the area or the length of the routing segments to determine their

contribution.

Syntax

phys_library(library_name

) {

topological_design_rules() {

(antenna_rule_name

) {

...

layer_antenna_factor(layer_name

string

, antenna_factor

float

) ;

...

}

layer_name

Specifies the layer that contains the factor.

antenna_factor

A floating-point number that represents the factor.

Example

layer_antenna_factor (m1_m2, 1) ;

adjusted_gate_area Group

Use this group to specify gate area values.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

adjusted_gate_area(antenna_lut_template_name

) {

...

}

template_name

The name of the template.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-9

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-9

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Example

adjusted_gate_area () {

...description...

}

Complex Attributes

index_1

values

adjusted_metal_area Group

Use this group to specify metal area values.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

adjusted_metal_area(antenna_lut_template_name

) {

...

}

template_name

The name of the template.

Example

adjusted_metal_area () {

...description...

}

Complex Attributes

index_1

values

antenna_ratio Group

Use this group to specify the piecewise linear table for antenna calculations.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

antenna_ratio (template_name

) {

...description...

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-10

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}

Example

antenna_ratio (antenna_template_1) {

...

}

Complex Attributes

index_1

values

index_1 Complex Attribute

Use this optional attribute to specify, in ascending order, each diffusion area limit.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

antenna_ratio (template_name

) {

index_1(value

float

, value

float

, value

float

, ...) ;

...

}

value, value, value, ...

Floating-point numbers that represent diffusion area limits in ascending order.

Example

antenna_ratio (antenna_template_1) {

index_1 ("0, 2.4, 4.8") ;

}

values Complex Attribute

The

values attribute specifies the table ratio.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-11

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-11

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antenna_ratio (template_name

) {

values (value

float

, value

float

, value

float

, ...) ;

}

value, value, value, ...

Floating-point numbers that represent the ratio to apply.

Example

antenna_ratio (antenna_template_1) {

values (10, 100, 1000) ;

}

Example 5-1 shows the attributes and group in an antenna rule group.

Example 5-1 An antenna_rule Group

antenna_rule (antenna_metal3_only) {

apply_to : gate_area

geometry_calculation_method : connected_only

pin_calculation_method : all_pins ;

routing_layer_calculation_method : side_wall_area ;

layer_antenna_factor (m1_m2, 1) ;

antenna_ratio (antenna_template_1) {

values (10, 100, 1000) ;

}

metal_area_scaling_factor () {

...

}

metal_area_scaling_factor Group

Use this group to specify the piecewise linear table for antenna calculations.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

metal_area_scaling_factor (template_name

) {

...description...

}

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-12

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Example

antenna_ratio (antenna_template_1) {

...

}

Complex Attributes

index_1

values

index_1 Complex Attribute

Use this optional attribute to specify, in ascending order, each diffusion area limit.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

antenna_ratio (template_name

) {

index_1(value

float

, value

float

, value

float

, ...) ;

...

}

value, value, value, ...

Floating-point numbers that represent diffusion area limits in ascending order.

Example

antenna_ratio (antenna_template_1) {

index_1 ("0, 2.4, 4.8") ;

}

values Complex Attribute

The

values attribute specifies the table ratio.

Syntax

phys_library(library_name

) {

topological_design_rules() {

antenna_rule(antenna_rule_name

) {

...

antenna_ratio (template_name

) {

values (value

float

, value

float

, value

float

, ...) ;

}

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Syntax for Groups in the topological_design_rules Group 5-13

Chapter 5: Specifying Groups in the topological_design_rules Group

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}

value, value, value, ...

Floating-point numbers that represent the ratio to apply.

Example

antenna_ratio (antenna_template_1) {

values (10, 100, 1000) ;

}

default_via_generate Group

Use the default_via_generate group to specify default horizontal and vertical layer

information.

Syntax

phys_library(library_nameid) {

topological_design_rules() {

default_via_generate ( name ) {

via_routing_layer( layer_name ) {

overhang ( float, float ); /*horizontal and vertical*/

end_of_line_overhang : float ;

}

via_contact_layer(layer_name) {

rectangle ( float, float, float, float ) ;

resistance : float ;

}

...

density_rule Group

Use this group to specify the metal density rule for the layer.

Syntax

phys_library(library_name

) {

topological_design_rules() {

density_rule(routing_layer_name

) {

...

}

routing_layer_name

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-14

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Example

density_rule () {

...

}

Complex Attributes

check_step

check_window_size

density_range

check_step Complex Attribute

The

check_step attribute specifies the stepping distance in distance units.

Syntax

phys_library(library_name

) {

topological_design_rules() {

density_rule(routing_layer_name

) {

check_step (value_1

float

, value_2

float

)

...

}

value_1, value_2

Floating-point numbers representing the stepping distance.

Example

check_step (0.0. 0.0);

check_window_size Complex Attribute

The

check_window_size attribute specifies the check window dimensions.

Syntax

phys_library(library_name

) {

topological_design_rules() {

density_rule(routing_layer_name

) {

check_window_size (x_value

float

, y_value

float

)

...

}

x_value, y_value

Floating-point numbers representing the window size.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-15

Chapter 5: Specifying Groups in the topological_design_rules Group

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Example

check_window_size (0.5. 0.5);

density_range Complex Attribute

The

density_range attribute specifies density percentages.

Syntax

phys_library(library_name

) {

topological_design_rules() {

density_rule(routing_layer_name

) {

density_range (min_value

float

, max_value

float

)

...

}

min_value, max_value

Floating-point numbers representing the minimum and maximum density percentages.

Example

density_range (0.0, 0.0);

extension_wire_spacing_rule Group

The extension_wire_spacing_rule group specifies the extension range for connected

wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

...

}

Example

extension_wire_spacing_rule() {

...

}

Groups

extension_wire_qualifier

min_total_projection_length_qualifier

spacing_check_qualifier

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-16

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extension_wire_qualifier Group

The extension_wire_qualifier group defines an extension wire.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

...

}

Simple Attributes

connected_to_fat_wire

corner_wire

not_connected_to_fat_wire

connected_to_fat_wire Simple Attribute

The

connected_to_fat_wire attribute specifies whether a wire connected to a fat wire

within the fat wire’s extension range is an extension wire.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

connected_to_fat_wire : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

connected_to_fat_wire : ;

corner_wire Simple Attribute

The

corner_wire attribute specifies whether a wire located in the corner of a fat wire’s

extension range is an extension wire.

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Syntax for Groups in the topological_design_rules Group 5-17

Chapter 5: Specifying Groups in the topological_design_rules Group

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Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

corner_wire : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

corner_wire : ;

not_connected_to_fat_wire Simple Attribute

The

not_connected_to_fat_wire attribute specifies whether a wire that is not within a fat

wire’s extension range is an extension wire.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

not_connected_to_fat_wire : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

not_connected_to_fat_wire : ;

min_total_projection_length_qualifier Group

The min_total_projection_length_qualifier group defines the projection length.

Syntax

phys_library(library_name

) {

topological_design_rules() {

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Syntax for Groups in the topological_design_rules Group 5-18

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extension_wire_spacing_rule() {

min_total_projection_length_qualifier () {

...

}

Simple Attributes

non_overlapping_projection

overlapping_projection

parallel_length

non_overlapping_projection Simple Attribute

The

non_overlapping_projection attribute specifies whether the extension wire spacing

rule includes the non-overlapping projection length between non-overlapping extension

wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

non_overlapping_projection : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

non_overlapping_projection : ;

overlapping_projection Simple Attribute

The

overlapping_projection attribute specifies whether the extension wire spacing rule

includes the overlapping projection length between non-overlapping extension wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

overlapping_projection : value

Boolean

;

...

}

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-19

Chapter 5: Specifying Groups in the topological_design_rules Group

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}

value

Valid values are TRUE and FALSE.

Example

overlapping_projection : ;

parallel_length Simple Attribute

The

parallel_length attribute specifies whether the extension wire spacing rule includes

the parallel length between extension wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

parallel_length : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

parallel_length : ;

spacing_check_qualifier Group

The spacing_check_qualifier group specifies...

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

spacing_check_qualifier () {

...

}

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-20

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Simple Attributes

corner_to_corner

non_overlapping_projection_wire

overlapping_projection_wires

wires_to_check

corner_to_corner Simple Attribute

The

corner_to_corner attribute specifies whether the extension wire spacing rule includes

the corner-to-corner spacing between two extension wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

corner_to_corner : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

corner_to_corner : TRUE ;

non_overlapping_projection_wire Simple Attribute

The

non-overlapping_projection_wire attribute specifies whether the extension wire

spacing rule includes the spacing between two non-overlapping extension wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

non_overlapping_projection_wire : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-21

Chapter 5: Specifying Groups in the topological_design_rules Group

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Example

non_overlapping_projection_wire : TRUE ;

overlapping_projection_wires Simple Attribute

The

overlapping_projection__wires attribute specifies whether the extension wire

spacing rule includes the spacing between two overlapping extension wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

overlapping_projection_wires : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

Example

overlapping_projection_wires : TRUE ;

wires_to_check Simple Attribute

The

wires_to_check attribute specifies whether the extension wire spacing rule includes

the spacing between any two wires or only between extension wires.

Syntax

phys_library(library_name

) {

topological_design_rules() {

extension_wire_spacing_rule() {

extension_wire_qualifier () {

wires_to_check : value

enum

;

...

}

value

Valid values are

all_wires and extension_wires.

Example

wires_to_check : all_wires ;

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stack_via_max_current Group

Use the stack_via_max_current group to define the values for current passing through a

via stack.

Syntax

phys_library(library_name

) {

topological_design_rules() {

stack_via_max_current (name

) {

...

}

name

Specifies a stack name.

Example

stack_via_max_current( ) {

...

}

Simple Attributes

bottom_routing_layer

top_routing_layer

Groups

max_current_ac_absavg

max_current_ac_avg

max_current_ac_peak

max_current_ac_rms

max_current_dc_avg

bottom_routing_layer Simple Attribute

The attribute specifies the bottom_routing_layer.

Syntax

phys_library(library_name

) {

...

topological_design_rules() {

stack_via_max_current (name

) {

...

bottom_routing_layer : layer_name

;

...

}

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-23

Chapter 5: Specifying Groups in the topological_design_rules Group

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}

layer_name

A string value representing the routing layer name.

Example

bottom_routing_layer : ;

top_routing_layer Simple Attribute

The top_routing_layer attribute specifies the top_routing_layer.

Syntax

phys_library(library_name

) {

...

topological_design_rules() {

stack_via_max_current (name

) {

...

top_routing_layer : layer_name

;

...

}

layer_name

A string value representing the routing layer name.

Example

top_routing_layer : ;

max_current_ac_absavg Group

Use this group to specify the absolute average value for the AC current that can pass

through a cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

stack_via_max_current (name

) {

...

max_current_ac_absavg(template_name

) {

...

}

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-24

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template_name

The name of the contact layer.

Example

max_current_ac_absavg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_avg Group

Use this group to specify an average value for the AC current that can pass through a cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

stack_via_max_current (name

) {

...

max_current_ac_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_avg() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_peak Group

Use this group to specify a peak value for the AC current that can pass through a cut.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-25

Chapter 5: Specifying Groups in the topological_design_rules Group

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Syntax

phys_library(library_name

) {

topological_design_rules() {

stack_via_max_current (name

) {

...

max_current_ac_peak(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_peak() {

...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_ac_rms Group

Use this group to specify a root mean square value for the AC current that can pass through

a cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

stack_via_max_current (name

) {

...

max_current_ac_rms(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_ac_rms() {

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...

}

Complex Attributes

index_1

index_2

index_3

values

max_current_dc_avg Group

Use this group to specify an average value for the DC current that can pass through a cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

stack_via_max_current (name

) {

...

max_current_dc_avg(template_name

) {

...

}

template_name

The name of the contact layer.

Example

max_current_dc_avg() {

...

}

Complex Attributes

index_1

index_2

values

via_rule Group

Use this group to define vias used at the intersection of special wires. You can have multiple

via_rule groups for a given layer pair.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-27

Chapter 5: Specifying Groups in the topological_design_rules Group

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...

}

via_rule_name

Specifies a via rule name.

Example

via_rule(crossm1m2) {

...

}

Simple Attribute

via_list

Group

routing_layer_rule

via_list Simple Attribute

The via_list attribute specifies a list of vias. The router selects the first via that satisfies

the routing layer rules.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

via_list : "via_name1

;

...

}

via_name1, ..., via_nameN

Specify the via values used in the selection process.

Example

via_list : "via12, via23" ;

routing_layer_rule Group

Use this group to specify the criteria for selecting a via from a list you specify with the vias

attribute.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-28

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Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

routing_layer_rule(layer_name

) {

...

}

layer_name

Specifies the name of a routing layer that the via connects to.

Example

routing_layer_rule(metal1) {

...

}

Simple Attributes

contact_overhang

max_wire_width

min_wire_width

metal_overhang

routing_direction

contact_overhang Simple Attribute

The

contact_overhang attribute specifies the amount of metal (wire) between a contact

and a via edge in the specified routing direction on all routing layers.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

routing_layer_rule(layer_name

) {

contact_overhang : value

float

;

...

}

value

A floating-point number that represents the value of the overhang.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-29

Chapter 5: Specifying Groups in the topological_design_rules Group

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Example

contact_overhang : 9.000e-02 ;

max_wire_width Simple Attribute

Use this attribute along with the

min_wire_width attribute to define the range of wire widths

subject to these via rules.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

routing_layer_rule(layer_name

) {

max_wire_width : value

float

;

...

}

value

A floating-point number that represents the value for the maximum wire width.

Example

max_wire_width : 1.2 ;

min_wire_width Simple Attribute

Use this attribute along with the

max_wire_width attribute to define the range of wire widths

subject to these via rules.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

routing_layer_rule(layer_name

) {

min_wire_width : value

float

;

...

}

value

A floating-point number that represents the value for the minimum wire width.

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Example

min_wire_width : 0.4 ;

metal_overhang Simple Attribute

The

metal_overhang attribute specifies the amount of metal (wire) at the edges of wire

intersection on all routing layers of the via_rule in the specified routing direction.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

routing_layer_rule(layer_name

) {

metal_overhang : value

float

;

...

}

value

A floating-point number that represents the value of the overhang.

Example

metal_overhang : 0.0 ;

routing_direction Simple Attribute

The

routing_direction attribute specifies the preferred routing direction for metal that

extends to make the overhang and metal overhang on all routing layers.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule(via_rule_name

) {

routing_layer_rule(layer_name

) {

routing_direction : value

enum

;

...

}

value

Valid values are

horizontal and vertical.

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Syntax for Groups in the topological_design_rules Group 5-31

Chapter 5: Specifying Groups in the topological_design_rules Group

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Example

routing_direction : horizontal ;

via_rule_generate Group

Use this group to specify the formula for generating vias when they are needed in the case

of special wiring. You can have multiple

via_rule_generate groups for a given layer pair.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

...

}

via_rule_generate_name

The name for the

via_rule_generate group.

Example

via_rule_generate(via12gen) {

...

}

Simple Attributes

capacitance

inductance

resistance

res_temperature_coefficient

Groups

contact_formula

routing_layer_formula

capacitance Simple Attribute

The capacitance attribute specifies the capacitance per cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_name

) {

capacitance : value

float

;

...

}

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}

value

A floating-point number that represents the capacitance value.

Example

capacitance : 0.02 ;

inductance Simple Attribute

The inductance attribute specifies the inductance per cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_name

) {

inductance : value

float

;

...

}

value

A floating-point number that represents the inductance value.

Example

inductance : 0.03 ;

resistance Simple Attribute

The resistance attribute specifies the aggregate resistance per contact rectangle.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_name

) {

resistance : value

float

;

...

}

value

A floating-point number that represents the resistance value.

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-33

Chapter 5: Specifying Groups in the topological_design_rules Group

Syntax for Groups in the topological_design_rules Group 5-33

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Example

resistance : 0.0375 ;

res_temperature_coefficient Simple Attribute

The res_temperature_coefficient attribute specifies the first-order correction to the

resistance per square when the operating temperature does not equal the nominal

temperature.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_name

) {

res_temperature_coefficient : value

float

;

...

}

value

A floating-point number that represents the coefficient.

Example

res_temperature_coefficient : 0.0375 ;

contact_formula Group

Use this group to specify the contact-layer geometry-generation formula for the generated

via.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

) {

...

}

contact_layer_name

The name of the associated contact layer.

Example

contact_formula(cut23) {

...

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}

Simple Attributes

max_cut_rows_current_direction

min_number_of_cuts

resistance

routing_direction

Complex Attributes

contact_array_spacing

contact_spacing

max_cuts

rectangle

max_cut_rows_current_direction Simple Attribute

Use this attribute to specify the maximum number of rows of cuts, in the current routing

direction, in a non-turning via for global wire (power and ground).

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

)

max_cut_rows_current_direction : value

int

;

...

}

value

An integer representing the maximum number of rows of cuts in a via.

Example

max_cut_rows_current_direction : 3 ;

min_number_of_cuts Simple Attribute

Use this attribute to specify attribute specifies the minimum number of cuts.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

)

min_number_of_cuts : value

int

;

...

}

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Syntax for Groups in the topological_design_rules Group 5-35

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}

value

An integer representing the minimum number of cuts.

Example

min_number_of_cuts : 2;

resistance Simple Attribute

The

resistance attribute specifies the aggregate resistance per contact cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

)

resistance : value

float

;

...

}

value

A floating-point number representing the aggregate resistance.

Example

resistance : 1.0 ;

routing_direction Simple Attribute

The

routing_direction attribute specifies the preferred routing direction, which serves as

the direction of extension for

contact_overlap and metal_overhang on all of the

generated via routing layers.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

routing_direction : value

enum

;

...

}

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}

value

Valid values are

horizontal and vertical.

Example

routing_direction : vertical ;

contact_array_spacing Complex Attribute

The

contact_array attribute specifies the spacing between two contact arrays.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

) {

contact_array_spacing(x

float

, y

float

) ;

...

}

x, y

Floating-point numbers that represent the spacing value.

Example

contact_array_spacing( 0.0 ) ;

contact_spacing Complex Attribute

The

contact_spacing attribute specifies the center-to-center spacing for generating an

array of contact cuts in the generated via.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

) {

contact_spacing(x

float

, y

float

) ;

...

}

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x, y

Floating-point numbers that represent the spacing value in terms of the x distance and y

distance between the centers of two contact cuts.

Example

contact_spacing(0.84, 0.84) ;

max_cuts Complex Attribute

The

max_cuts attribute specifies the maximum number of cuts.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

) {

max_cuts(x

int

, y

int

) ;

...

}

x, y

Integer numbers that represent the number of cuts.

Example

max_cuts () ;

rectangle Complex Attribute

The

rectangle attribute specifies the dimension of the contact cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

contact_formula(contact_layer_name

) {

rectangle(x1

float

, y1

float

, x2

float

, y1

float

) ;

...

}

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x1, y1, x2, y2

Floating-point numbers that specify the coordinates for the diagonally opposite corners

of the rectangle.

Example

rectangle(-0.3, -0.3, 0.3, 0.3) ;

routing_formula Group

Use this group to specify properties for the routing layer. You must specify a

routing_formula group for each routing layer associated with a via; typically, two routing

layers are associated with a via.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

routing_formula(layer_name

) {

...

}

layer_name

The name of the associated routing layer.

Example

routing_formula(metal1) {

...

}

routing_formula(metal2) {

...

}

Simple Attributes

contact_overhang

max_wire_width

min_wire_width

metal_overhang

routing_direction

Complex Attribute

enclosure

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contact_overhang Simple Attribute

The

contact_overhang attribute specifies the minimum amount of metal (wire) extension

between a contact and a via edge in the specified direction.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

routing_formula(layer_name

) {

contact_overhang : value

float

;

...

}

value

A floating-point number representing the amount of contact overhang.

Example

contact_overhang : 9.000e-01 ;

max_wire_width Simple Attribute

Use this attribute along with the

min_wire_width attribute to define the range of wire widths

subject to these via generation rules.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

routing_formula(layer_name

) {

max_wire_width : value

float

;

...

}

value

A floating-point number representing the maximum wire width.

Example

max_wire_width : 2.4 ;

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min_wire_width Simple Attribute

Use this attribute along with the

max_wire_width attribute to define the range of wire widths

subject to these via generation rules.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

routing_formula(layer_name

) {

min_wire_width : value

float

;

...

}

value

A floating-point number representing the minimum wire width.

Example

min_wire_width : 1.4 ;

metal_overhang Simple Attribute

The

metal_overhang attribute specifies the minimum amount of metal overhang at the

edges of wire intersections in the specified direction.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

routing_formula(layer_name

) {

metal_overhang : value

float

;

...

}

value

A floating-point number representing the amount of metal overhang.

Example

metal_overhang : 0.1 ;

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routing_direction Simple Attribute

The

routing_direction attribute specifies the preferred routing direction, which serves as

the direction of extension for

contact_overlap and metal_overhang on all of the

generated via routing layers.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

routing_formula(layer_name

) {

routing_direction : value

enum

;

...

}

value

Valid values are

horizontal and vertical.

Example

routing_direction : vertical ;

enclosure Complex Attribute

The

enclosure attribute specifies the dimensions of the routing layer enclosures.

Syntax

phys_library(library_name

) {

topological_design_rules() {

via_rule_generate(via_rule_generate_name

) {

routing_formula(layer_name

) {

enclosure(value_1

float

, value_2

float

)

...

}

value_1, value_2

Floating-point number representing the enclosure dimensions.

Example

enclosure (0.0, 0.0) ;

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wire_rule Group

Use this group to specify the nondefault wire rules for regular wiring.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

...

}

wire_rule_name

The name of the wire rule group.

Example

wire_rule(rule1) {

...

}

Groups

layer_rule

via

layer_rule Group

Use this group to specify properties for each routing layer. The width and spacing

specifications in this group override the default values defined in the

routing_layer group

in the

resource group. If the extension is not specified or if the extension has a nonzero

value less than half the routing width, then a default extension of half the routing width for the

layer is used.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

layer_rule(layer_name

) {

...

}

layer_name

The name of the layer defined in the wire rule.

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Example

layer_rule(metal1) {

...

}

Simple Attributes

min_spacing

wire_extension

wire_width

Complex Attribute

same_net_min_spacing

min_spacing Simple Attribute

The

min_spacing attribute specifies the minimum spacing for regular wires that are on the

specified layer, subject to the wire rule, and belonging to different nets.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

layer_rule(layer_name

) {

min_spacing : value

float

;

...

}

value

A floating-point number representing the spacing value.

Example

min_spacing : 0.4 ;

wire_extension Simple Attribute

The

wire_extension attribute specifies a default distance value for extending wires at vias

for regular wires on this layer subject to the wire rule. A value of 0 indicates no wire

extension. If the value is less than half the

wire_width value, the router uses half the value

of the

wire_width attribute as the wire extension value. If the wire_width attribute is not

defined, the router uses the default value declared in the

routing_layer group.

Syntax

phys_library(library_name

) {

topological_design_rules() {

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wire_rule(wire_rule_name

) {

layer_rule(layer_name

) {

wire_extension : value

float

;

...

}

value

A floating-point number that represents the wire extension value.

Example

wire_extension : 0.25 ;

wire_width Simple Attribute

The

wire_width attribute specifies the wire width for regular wires that are on the specified

layer and are subject to the wire rule. The

wire_width value must be equivalent to or more

than the

default_wire_width value defined in the layer group.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

layer_rule(layer_name

) {

wire_width : value

float

;

...

}

value

A floating-point number representing the width value.

Example

wire_width : 0.4 ;

same_net_min_spacing Complex Attribute

The

same_net_min_spacing attribute specifies the minimum spacing required between

wires on a layer or on two layers in the same net.

Syntax

phys_library(library_name

) {

topological_design_rules() {

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wire_rule(wire_rule_name

) {

layer_rule(layer_name

) {

...

same_net_min_spacing(layer1_name

layer2_name

, space

float

, is_stack

Boolean

) ;

}

layer1_name, layer2_name

Specify two routing layers. To specify spacing between wires on the same layer, use the

same name for both layer1_name and layer2_name.

space

A floating-point number representing the minimum spacing.

is_stack

Valid values are

TRUE and FALSE. Set the value to TRUE to allow stacked vias at the

routing layer. When set to TRUE, the

same_net_min_spacing value can be 0 (complete

overlap) or the value held by the

min_spacing attribute.

Example

same_net_min_spacing(m2, m2, 0.4, false);

via Group

Use this group to specify the via that the router uses for this wire rule.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

...

}

via_name

Specifies the via name.

Example

via(non_default_via12) {

...

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}

Simple Attributes

capacitance

inductance

res_temperature_coefficient

resistance

Complex Attribute

same_net_min_spacing

Groups

foreign

via_layer

capacitance Simple Attribute

The

capacitance attribute specifies the capacitance per cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

capacitance : value

float

;

...

)

}

value

A floating-point number that represents the capacitance per cut.

Example

capacitance : 0.2 ;

inductance Simple Attribute

The

inductance attribute specifies the inductance per cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

inductance : value

float

;

...

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}

value

A floating-point number that represents the inductance per cut.

Example

inductance : 0.03 ;

res_temperature_coefficient Simple Attribute

Use this attribute to specify the first-order temperature coefficient for the resistance.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

res_temperature_coefficient : value

float

;

...

}

value

A floating-point number that represents the temperature coefficient.

Example

res_temperature_coefficient : 0.0375 ;

resistance Simple Attribute

The

resistance attribute specifies the aggregate resistance per contact cut.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

resistance : value

float

;

...

}

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value

A floating-point number representing the resistance.

Example

resistance : 1.000e+00 ;

same_net_min_spacing Complex Attribute

The

same_net_min_spacing attribute specifies the minimum spacing required between

wires on a layer or on two layers in the same net.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

...

same_net_min_spacing(layer1_name

layer2_name

, space

float

, is_stack

Boolean

) ;

}

layer1_name, layer2_name

Specify two routing layers. To specify spacing between wires on the same layer, use the

same name for both layer1_name and layer2_name.

space

A floating-point number representing the minimum spacing.

is_stack

Valid values are

TRUE and FALSE. Set the value to TRUE to allow stacked vias at the

routing layer. When set to TRUE, the

same_net_min_spacing value can be 0 (complete

overlap) or the value held by the

min_spacing attribute.

Example

same_net_min_spacing(m2, m2, 0.4, false);

foreign Group

The

foreign attribute specifies which GDSII structure (model) to use when an instance of

a via is placed.

Note:

Only one

foreign group is allowed for each via.

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Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

foreign(foreign_object_name

) {

...

}

foreign_object_name

The name of a GDSII structure (model).

Example

foreign(fdesf2a6) {

...

}

Simple Attribute

orientation

Complex Attribute

origin

orientation Simple Attribute

The

orientation attribute specifies the orientation of a foreign object.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

foreign(foreign_object_name

) {

orientation : value

enum

;

...

}

value

Valid values are

N (north), E (east), S (south), W (west), FN (flip north), FE (flip east), FS

(flip south), and

FW (flip west), as shown in Figure 5-1.

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Figure 5-1 Orientation Examples

Example

orientation : FN ;

origin Complex Attribute

The

origin attribute specifies the equivalent coordinates for the origin of a placed foreign

object.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

foreign(foreign_object_name

) {

...

origin(num_x

float

, num_y

float

) ;

}

num_x, num_y

Floating-point numbers that specify the coordinates where the foreign object is placed.

Example

origin(-1, -1) ;

N (north) E (east) S (south) W (west)

FW (flip west)FE (flip east)FN (flip north) FS (flip south)

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via_layer Group

Use this group to specify a via layer. A via can have one or more

via_layer groups.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

via_layer(via_layer

) {

...

}

via_layer

A predefined layer name.

Example

via_layer(via23) {

...

}

Complex Attribute

rectangle

rectangle Complex Attribute

The

rectangle attribute specifies the geometry of the via on the layer.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_rule(wire_rule_name

) {

via(via_name

) {

via_layer(via_layer

) {

rectangle(x1

float

, y1

float

, x2

float

, y2

float

) ;

...

}

x1, y1, x2, y2

Floating-point numbers that specify the coordinates for the diagonally opposite corners

of the rectangle.

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Example

rectangle(-0.3, -0.3, 0.3, 0.3) ;

wire_slotting_rule Group

Use this group to specify the wire slotting rules to satisfy the maximum metal density design

rule.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

...

}

Simple Attributes

max_metal_density

min_length

min_width

Complex Attributes

slot_length_range

slot_length_side_clearance

slot_length_wise_spacing

slot_width_range

slot_width_side_clearance

slot_width_wise_spacing

max_metal_density Simple Attribute

Use this attribute to specify the maximum metal density for a slotted layer, as a percentage

of the layer.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

max_metal_density : value

float

;

}

value

A floating-point number that represents the percentage.

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Example

max_metal_density : 0.70 ;

min_length Simple Attribute

The min_length attribute specifies the the minimum geometry length threshold that triggers

slotting. Slotting is triggered when the thresholds specified by the

min_length and

min_width attributes are both surpassed.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

min_length : value

float

;

}

value

A floating-point number that represents the minimum geometry length threshold.

Example

min_length : 0.5 ;

min_width Simple Attribute

The min_width attribute specifies the the minimum geometry length threshold that triggers

slotting. Slotting is triggered when the thresholds specified by the

min_length and

min_width attributes are both surpassed.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

min_width : value

float

;

}

value

A floating-point number that represents the minimum geometry width threshold.

Example

min_width : 0.4 ;

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slot_length_range Complex Attribute

The slot_length attribute specifies the allowable range for the length of a slot.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

slot_length_range (min_value

float

, max_value

float

) ;

}

min_value, max_value

Floating-point numbers that represent the minimum and maximum range values.

Example

slot_length_range (0.2, 0.3) ;

slot_length_side_clearance Complex Attribute

Use this attribute to specify the spacing from the end edge of a wire to its outermost slot.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

slot_length_side_clearance (min_value

float

, max_value

float

) ;

}

min_value, max_value

Floating-point numbers that represent the minimum and maximum spacing values.

Example

slot_length_side_clearance (0.2, 0.4) ;

slot_length_wise_spacing Complex Attribute

Use this attribute to specify the minimum spacing between adjacent slots in a direction

perpendicular to the wire (current flow) direction.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

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slot_length_wise_spacing(min_value

float

, max_value

float

) ;

}

min_value, max_value

Floating-point numbers that represent the minimum and maximum spacing distance

values.

Example

slot_length_wise_spacing (0.2, 0.3);

slot_width_range Complex Attribute

Use this attribute to specify the allowable range for the width of a slot.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

slot_width_range(min_value

float

, max_value

float

) ;

}

min_value, max_value

Floating-point numbers that represent the minimum and maximum range values.

Example

slot_width_range (0.2, 0.3) ;

slot_width_side_clearance Complex Attribute

Use this attribute to specify the spacing from the side edge of a wire to its outermost slot.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

) {

slot_width_side_clearance(min_value

float

max_value

float

) ;

}

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min_value, max_value

Floating-point numbers that represent the minimum and maximum spacing distance

values.

Example

slot_width_side_clearance (0.2, 0.3) ;

slot_width_wise_spacing Complex Attribute

Use this attribute to specify the minimum spacing between slots in a direction perpendicular

to the wire (current flow) direction.

Syntax

phys_library(library_name

) {

topological_design_rules() {

wire_slotting_rule(routing_layer_name

){

slot_width_wise_spacing (min_value

float

max_value

float

) ;

}

min_value, max_value

Floating-point numbers that represent the minimum and maximum spacing distance

values.

Example

slot_width_wise_spacing (0.2, 0.3) ;

6-1

Specifying Attributes and Groups in the

process_resource Group 6

You use the process_resource group to specify various process corners in a particular

process. The

process_resource group is defined inside the phys_library group and must

be defined before you model any cell. Multiple

process_resource groups are allowed in a

physical library.

The information in this chapter includes the following:

• Syntax for Attributes in the process_resource Group

• Syntax for Groups in the process_resource Group

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Attributes in the process_resource Group 6-2

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Syntax for Attributes in the process_resource Group

This section describes the attributes that you define in the process_resource group.

Simple Attributes

baseline_temperature

field_oxide_thickness

process_scale_factor

Complex Attribute

plate_cap

baseline_temperature Simple Attribute

Defines a baseline operating condition temperature.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

...

baseline_temperature : value

float

;

...

}

value

A floating-point number representing the baseline temperature.

Example

baseline_temperature : 0.5 ;

field_oxide_thickness Simple Attribute

Specifies the field oxide thickness.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

...

field_oxide_thickness : value

float

;

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Attributes in the process_resource Group 6-3

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Attributes in the process_resource Group 6-3

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value

A positive floating-point number in distance units.

Example

field_oxide_thickness : 0.5 ;

process_scale_factor Simple Attribute

Specifies the factor to describe the process shrinkage factor to scale the length, width, and

spacing geometries.

Note:

Do not specify a value for the process_scale_factor attribute if you specify a value for the

shrinkage attribute or shrinkage_table group.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

...

process_scale_factor : value

float

;

...

}

value

A floating-point number representing the scaling factor.

Example

process_scale_factor : 0.96 ;

plate_cap Complex Attribute

Specifies the interlayer capacitance per unit area when a wire on the first routing layer

overlaps a wire on the second routing layer.

Note:

The

plate_cap statement must follow all the routing_layer statements and precede

the

routing_wire_model statements.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

...

routing_layer(layer_name

) {

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-4

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...

}

plate_cap(PCAP_l1_l2

float

, PCAP_l1_l3

float

PCAP_ln-1_ln

float

) ;

routing_wire_model(model_name

) {

...

}

PCAP_la_lb

Represents a floating-point number that specifies the plate capacitance per unit area

between two routing layers, layer a and layer b. The number of PCAP values is

determined by the number of previously defined routing layers. You must specify every

combination of routing layer pairs based on the order of the routing layers. For example,

if the layers are defined as substrate, layer1, layer2, and layer3, then the PCAP values

are defined in

PCAP_l1_l2, PCAP_l1_l3, and PCAP_l2_l3.

Example

The example shows a

plate_cap statement for a library with four layers. The values are

indexed by the routing layer order.

plate_cap(0.35, 0.06, 0.0, 0.25, 0.02, 0.15) ;

/* PCAP_1_2, PCAP_1_3, PCAP_1_4, PCAP_2_3, PCAP_2_4, PCAP_3_4 */

Syntax for Groups in the process_resource Group

This section describes the groups that you define in the process_resource group.

Groups

process_cont_layer

process_routing_layer

process_via

process_via_rule_generate

process_wire_rule

process_cont_layer Group

Specifies values for the process contact layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_cont_layer(layer_name

) {

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-5

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-5

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...

}

layer_name

The name of the contact layer.

Example

process_cont_layer(m1) {

...

}

process_routing_layer Group

Use a process_routing_layer group to define operating-condition-specific routing layer

attributes.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

...

}

layer_name

The name of the scaled routing layer.

Example

process_routing_layer(m1) {

...

}

Simple Attributes

cap_multiplier

cap_per_sq

coupling_cap

edgecapacitance

fringe_cap

height

inductance_per_dist

lateral_oxide_thickness

oxide_thickness

res_per_sq

shrinkage

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-6

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thickness

Complex Attributes

conformal_lateral_oxide

lateral_oxide

Groups

resistance_table

shrinkage_table

cap_multiplier Simple Attribute

Specifies a scaling factor for interconnect capacitance to account for changes in

capacitance due to nearby wires.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

cap_multiplier : value

float

;

...

}

value

A floating-point number representing the scaling factor.

Example

cap_multiplier : 2.0

cap_per_sq Simple Attribute

Specifies the substrate capacitance per square unit area of a process routing layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

cap_per_sq : value

float

;

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-7

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-7

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value

A floating-point number that represents the capacitance for a square unit of wire, in

picofarads per square distance unit.

Example

cap_per_sq : 5.909e-04 ;

coupling_cap Simple Attribute

Specifies the coupling capacitance per unit length between parallel wires on the same layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

coupling_cap : value

float

;

...

}

value

A floating-point number that represents the coupling capacitance.

Example

coupling_cap: 0.000019 ;

edgecapacitance Simple Attribute

Specifies the total peripheral capacitance per unit length of a wire on the process routing

layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

edgecapacitance : value

float

;

...

}

value

A floating-point number that represents the capacitance per unit length value.

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-8

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Example

edgecapacitance : 0.00065 ;

fringe_cap Simple Attribute

Specifies the fringe (sidewall) capacitance per unit length of a process routing layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

fringe_cap : value

float

;

...

}

value

A floating-point number that represents the fringe capacitance.

Example

fringe_cap : 0.00023 ;

height Simple Attribute

Specifies the distance from the top of the substrate to the bottom of the routing layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

height : value

float

;

...

}

value

A floating-point number representing the distance unit of measure.

Example

height : 1.0 ;

inductance_per_dist Simple Attribute

Specifies the inductance per unit length of a process routing layer.

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-9

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-9

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Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

inductance_per_dist : value

float

;

...

}

value

A floating-point number that represents the inductance.

Example

inductance_per_dist : 0.0029 ;

lateral_oxide_thickness Simple Attribute

Specifies the lateral oxide thickness for the layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

){

process_routing_layer(layer_name

) {

lateral_oxide_thickness : value

float

;

...

}

value

A floating-point number that represents the lateral oxide thickness.

Example

lateral_oxide_thickness : 1.33 ;

oxide_thickness Simple Attribute

Specifies the oxide thickness for the layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

){

process_routing_layer(layer_name

) {

oxide_thickness : value

float

;

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-10

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}

value

A floating-point number that represents the oxide thickness.

Example

oxide_thickness : 1.33 ;

res_per_sq Simple Attribute

Specifies the substrate resistance per square unit area of a process routing layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

res_per_sq : value

float

;

...

}

value

A floating-point number representing the resistance.

Example

res_per_sq : 1.200e-01 ;

shrinkage Simple Attribute

Specifies the total distance by which the wire width on the layer shrinks or expands. The

shrinkage parameter is a sum of the shrinkage for each side of the wire. The post-shrinkage

wire width represents the final processed silicon width as calculated from the drawn silicon

width in the design database.

Note:

Do not specify a value for the

shrinkage attribute or shrinkage_table group if you

specify a value for the

process_scale_factor attribute.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

shrinkage : value

float

;

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-11

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-11

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}

value

A floating-point number representing the distance unit of measure. A positive number

represents shrinkage; a negative number represents expansion.

Example

shrinkage : 0.00046 ;

thickness Simple Attribute

Specifies the thickness of the user units of objects process routing layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

thickness : value

float

;

...

}

value

A floating-point number representing the thickness of the routing layer.

Example

thickness : 0.02 ;

conformal_lateral_oxide Complex Attribute

Specifies the substrate capacitance per unit area of a process routing layer.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

conformal_lateral_oxide : value

float

;

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-12

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value

A floating-point number that represents the capacitance for a square unit of wire, in

picofarads per square distance unit.

Example

conformal_lateral_oxide : 5.909e-04 ;

lateral_oxide Complex Attribute

Specifies the lateral oxide thickness.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

lateral_oxide : value

float

;

...

}

value

A floating-point number representing the lateral oxide thickness.

Example

lateral_oxide : 5.909e-04

resistance_table Group

Use this group to specify an array of values for sheet resistance.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

resistance_table(template_name

) {

...

}

Example

resistance_table ( ) {

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-13

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-13

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Complex Attributes

index_1

index_2

values

index_1 and index_2 Complex Attributes

Specifies the default indexes.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

resistance_table(template_name

) {

index_1 (value

float

, value

float

, value

float

, ...)

index_2 (value

float

, value

float

, value

float

, ...)

}

Example

resistance_table (template_name) {

index_1 ( ) ;

index_2 ( ) ;

values ( ) ;

shrinkage_table Group

Specifies a lookup table template.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_routing_layer(layer_name

) {

shrinkage_table(template_name

) {

...

}

template_name

The name of a

shrinkage_lut_template defined at the phys_library level.

Example

shrinkage_table (shrinkage_template_1) {

...

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-14

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}

Complex Attributes

index_1

index_2

values

index_1 and index_2 Complex Attributes

Specify the default indexes.

Syntax

phys_library(library_name

) {

...

shrinkage_table (template_name

) {

index_1 (value

float

, value

float

, value

float

, ...);

index_2 (value

float

, value

float

, value

float

, ...);

...

}

...

}

value, value, value, ...

Floating-point numbers that represent the default indexes.

Example

shrinkage_lut_template (resistance_template_1) {

index_1 (0.0, 0.0, 0.0, 0.0);

index_2 (0.0, 0.0, 0.0, 0.0);

}

process_via Group

Use a process_via group to define an operating-condition-specific resistance value for a

via.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via(via_name

) {

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-15

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-15

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via_name

The name of the via.

Example

via(via12) {

...

}

Simple Attributes

capacitance

inductance

resistance

res_temperature_coefficient

capacitance Simple Attribute

Specifies the capacitance contact in a cell instance (or over a macro).

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via(via_name

) {

capacitance : value

float

;

...

}

value

A floating-point number that represents the capacitance.

Example

capacitance : 0.05 ;

inductance Simple Attribute

Specifies the inductance per cut.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via(via_name

) {

inductance : value

float

;

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-16

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value

A floating-point number that represents the inductance value.

Example

inductance : 0.03 ;

resistance Simple Attribute

Specifies the aggregate resistance per contact rectangle.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via(via_name

) {

resistance : value

float

;

...

}

value

A floating-point number that represents the resistance value.

Example

resistance : 0.0375 ;

res_temperature_coefficient Simple Attribute

The res_temperature_coefficient attribute specifies the coefficient of the first-order

correction to the resistance per square when the operating temperature does not equal the

nominal temperature.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via(via_name

) {

res_temperature_coefficient : value

float

;

...

}

value

A floating-point number that represents the temperature coefficient.

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-17

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-17

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Example

res_temperature_coefficient : 0.03 ;

process_via_rule_generate Group

Use a process_via_rule_generate group to define an operating-condition-specific

resistance value for a via.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via_rule_generate(via_name

) {

...

}

via_name

The name of the via.

Example

via(via12) {

...

}

Simple Attributes

capacitance

inductance

resistance

res_temperature_coefficient

capacitance Simple Attribute

Specifies the capacitance per cut.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via_rule_generate(via_name

) {

capacitance : value

enum

;

...

}

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-18

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value

A floating-point number that represents the capacitance value.

Example

capacitance : 0.05 ;

inductance Simple Attribute

Specifies the inductance per cut.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via_rule_generate(via_name

) {

inductance : value

float

;

...

}

value

A floating-point number that represents the inductance value.

Example

inductance : 0.03 ;

resistance Simple Attribute

Specifies the aggregate resistance per contact rectangle.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via_rule_generate(via_name

) {

resistance : value

float

;

...

}

value

A floating-point number that represents the resistance.

Example

resistance : 0.0375 ;

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-19

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-19

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res_temperature_coefficient Simple Attribute

Specifies the first-order temperature coefficient for the resistance.

Syntax

phys_library(library_name

) {

process_resource(architecture

enum

) {

process_via_rule_generate(via_name

) {

res_temperature_coefficient : value

float

;

...

}

value

A floating-point number that represents the temperature coefficient.

Example

res_temperature_coefficient : 0.0375 ;

process_wire_rule Group

Use this group to define an operating-condition-specific value for a nondefault regular via

defined within a

wire_rule group.

Syntax

phys_library(library_name

) {

process_resource() {

process_wire_rule(wire_rule_name

) {

...

}

wire_rule_name

The name of the wire rule group.

Example

process_wire_rule(rule1) {

...

}

Group

process_via

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-20

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process_via Group

Specifies the via that the router uses for this wire rule.

Syntax

phys_library(library_name

) {

process_resource() {

process_wire_rule(wire_rule_name

) {

process_via(via_name

) {

...

}

via_name

Specifies the via name.

Example

process_via(non_default_via12) {

...

}

Simple Attributes

capacitance

inductance

resistance

res_temperature_coefficient

capacitance Simple Attribute

Specifies the capacitance per cut.

Syntax

phys_library(library_name

) {

process_resource() {

process_wire_rule(wire_rule_name

) {

process_via(via_name

) {

capacitance : value

enum

;

...

}

value

A floating-point number that represents the capacitance value.

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-21

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-21

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Example

capacitance : 0.0 ;

inductance Simple Attribute

Specifies the inductance per cut.

Syntax

phys_library(library_name

) {

process_resource() {

process_wire_rule(wire_rule_name

) {

process_via(via_name

) {

inductance : value

float

;

...

}

value

A floating-point number that represents the inductance value.

Example

inductance : 0.0 ;

res_temperature_coefficient Simple Attribute

Specifies the first-order temperature coefficient for the resistance unit area of a routing layer.

Syntax

phys_library(library_name

) {

process_resource() {

process_wire_rule(wire_rule_name

) {

process_via(via_name

) {

res_temperature_coefficient : value

float

;

...

}

value

A floating-point number that represents the coefficient value.

Example

res_temperature_coefficient : 0.0375 ;

Chapter 6: Specifying Attributes and Groups in the process_resource Group

Syntax for Groups in the process_resource Group 6-22

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resistance Simple Attribute

Specifies the aggregate resistance per contact cut.

Syntax

phys_library(library_name

) {

process_resource() {

process_wire_rule(wire_rule_name

) {

process_via(via_name

) {

resistance : value

float

;

...

}

value

A floating-point number representing the resistance value.

Example

resistance : 1.000e+00 ;

7-1

Specifying Attributes and Groups in the macro

Group 7

For each cell, you use the macro group to specify the macro-level information and pin

information. Macro-level information includes such properties as symmetry, size and

obstruction. Pin information includes such properties as geometry and position.

This chapter describes the attributes and groups that you define in the

macro group, with the

exception of the

pin group, which is described in Chapter 9.

Chapter 7: Specifying Attributes and Groups in the macro Group

macro Group 7-2

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macro Group

Use this group to specify the physical aspects of the cell.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

...

}

cell_name

Specifies the name of the cell.

Note:

This name must be identical to the name of the logical

cell_name that you define in

the library.

Example

macro(and2) {

...

}

Simple Attributes

cell_type

create_full_pin_geometry

eq_cell

extract_via_region_within_pin_area

in_site

in_tile

leq_cell

source

symmetry

Complex Attributes

extract_via_region_from_cont_layer

obs_clip_box

origin

size

Groups

foreign

obs

site_array

Chapter 7: Specifying Attributes and Groups in the macro Group

macro Group 7-3

Chapter 7: Specifying Attributes and Groups in the macro Group

macro Group 7-3

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cell_type Simple Attribute

Use this attribute to specify the cell type.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

cell_type : value

enum

;

...

}

value

See Ta bl e 7- 1 for value definitions.

Example

cell_type : block ;

Table 7-1 cell_type Values

Cell type Definition

antennadiode_core Dissipates a manufacturing charge from a diode.

areaio_pad Area I/O driver

blackbox_block Subclass of block

block Predefined macro used in hierarchical design

bottomleft_endcap I/O cell placed at bottom-left corner

bottomright_endcap I/O cell placed at bottom-right corner

bump_cover Subclass of cover

core Core cell

cover A cover cell is fixed to the floorplan

feedthru_core Connects to another cell.

inout_pad Bidirectional pad cell

input_pad Input pad cell

Chapter 7: Specifying Attributes and Groups in the macro Group

macro Group 7-4

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create_full_pin_geometry Simple Attribute

Use this attribute to specify the full pin geometry.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

create_full_pin_geometry : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE.

output_pad Output pad cell

pad I/O cell

post_endcap Cell placed at the left or top end of core rows to connect

with the power ring

power_pad Power pad

pre_endcap Cell placed at the right or bottom end of core rows to

connect with the power ring

ring Blocks that can cut prerouted special nets and connect

to these nets with ring pins

spacer_core Fills space between regular core cells.

spacer_pad Spacer pad

tiehigh_core Connects I/O terminals to the power or ground.

tielow_core Connects I/O terminals to the power or ground.

topleft_endcap I/O cell placed at top-left corner

topright_endcap I/O cell placed at top-right corner

Table 7-1 cell_type Values (continued)

Cell type Definition

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Example

create_full_pin_geometry : TRUE ;

eq_cell Simple Attribute

Use this attribute to specify an electrically equivalent cell that has the same functionality, pin

positions, and electrical characteristics (such as timing and power) as a previously defined

cell.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

eq_cell : eq_cell_name

;

...

}

eq_cell_name

The name of the equivalent cell previously defined in the

phys_library group.

Example

eq_cell : and2a ;

extract_via_region_within_pin_area Simple Attribute

Use this attribute to whether to extract via region information from within the pin area only.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

extract_via_region_within_pin_area : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE (default).

Example

extract_via_region_within_pin_area : TRUE ;

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in_site Simple Attribute

Use this attribute to specify the site associated with a cell. The site class and symmetry must

match the cell class and symmetry.

Note:

You can use this attribute only with standard cell libraries.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

in_site : site_name

;

...

}

site_name

The name of the associated site.

Example

in_site : core ;

in_tile Simple Attribute

The in_tile attribute specifies the tile associated with a cell.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

in_tile : tile_name

;

...

}

value

The name of the associated tile.

Example

in_tile : ;

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leq_cell Simple Attribute

Use this attribute to specify a logically equivalent cell that has the same functionality and pin

interface as a previously defined cell. Logically equivalent cells need not have the same

electrical characteristics, such as timing and power.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

leq_cell : leq_cell_name

;

...

}

leq_cell_name

The name of the equivalent cell previously defined in the

phys_library group.

Example

leq_cell : and2x2 ;

source Simple Attribute

Use this attribute to specify the source of a cell.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

source : value

enum

;...

}

value

Valid values are

user (for a regular cell), generate (for a parametric cell), and block (for

a block cell).

Example

source : user ;

symmetry Simple Attribute

Use this attribute to specify the acceptable orientation for the macro. The cell symmetry

must match the associated site symmetry. When the attribute is not specified, a cell is

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considered asymmetric. The allowable orientations of the cell are derived from the

symmetry.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

symmetry : value

enum

;

...

}

value

Valid values are

r, x, y, xy, and rxy.

where

Specifies symmetry in 90 degree counterclockwise rotation

Specifies symmetry about the x-axis

Specifies symmetry about the y-axis

Specifies symmetry about the x-axis and the y-axis

rxy

Specifies symmetry about the x-axis and the y-axis and in 90 degree counterclockwise

rotation increments

Example

symmetry : r ;

extract_via_region_from_cont_layer Complex Attribute

Use this attribute to extract via region information from contact layers.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

extract_via_region_from_cont_layer(cont_layer_name

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cont_layer_name

, ... ) ;

...

}

cont_layer_name

A list of one or more string values representing the contact layer names.

Example

extract_via_region_from_cont_layer () ;

obs_clip_box Complex Attribute

Use this attribute to specify a rectangular area of a cell layout in which connections are not

allowed or not desired. The resulting rectangle becomes an obstruction. Use this attribute at

the

macro group level to customize the rectangle size for a cell. The values you specify at the

macro group level override the values you set in the pseudo_phys_library group.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs_clip_box( top

float

, right

float

bottom

float

, left

float

) ;

...

}

top, right, bottom, left

Floating-point numbers that specify the coordinates for the corners of the rectangular

area.

Example

obs_clip_box(165000, 160000, 160000, 160000) ;

origin Complex Attribute

Use this attribute to specify the origin of a cell, which is the lower-left corner of the bounding

box.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

origin(num_x

float

, num_y

float

) ;

...

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}

num_x, num_y

Floating-point numbers that specify the origin coordinates.

Example

origin(0.0, 0.0) ;

size Complex Attribute

Use this attribute to specify the size of a cell. This is the minimum bounding rectangle for the

cell. Set this to a multiple of the placement grid.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

size(num_x

float

, num_y

float

) ;

...

}

num_x, num_y

Floating-point numbers that represent the cell bounding box dimension. For standard

cells, the height should be equal to the associated site height and the width should be a

multiple of the site width.

Example

size(0.9, 7.2) ;

foreign Group

Use this group to specify the associated GDSII structure (model) of a macro. Used for GDSII

input and output to adjust the coordinate and orientation variations between GDSII and the

physical library.

Note:

Only one

foreign group is allowed in a macro group.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

foreign(foreign_object_name

) {

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...

}

foreign_object_name

The name of the corresponding GDSII cell (model).

Example

foreign(and12a) {

...

}

Simple Attribute

orientation

Complex Attribute

origin

orientation Simple Attribute

Use this attribute to specify the orientation of the GDSII foreign cell.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

foreign(foreign_object_name

string

) {

orientation : value

enum

;

...

}

value

Valid values are

N (north), E (east), S (south), W (west), FN (flip north), FE (flip east), FS

(flip south), and

FW (flip west), as shown in Figure 7-1.

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Figure 7-1 Orientation Examples

Example

orientation : N ;

origin Complex Attribute

Use this attribute to specify the equivalent coordinates of a placed macro origin in the GDSII

coordinate system.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

foreign(foreign_object_name

) {

origin(x

float

, y

float

) ;

...

}

x, y

Floating-point numbers that specify the GDSII coordinates where the macro origin is

placed.

Example

The example shows that the macro origin (the lower-left corner) is located at (-2.0, -3.0) in

the GDSII coordinate system.

origin(-2.0, -3.0) ;

N (north) E (east) S (south) W (west)

FW (flip west)FE (flip east)FN (flip north) FS (flip south)

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obs Group

Use this group to specify an obstruction on a cell.

Note:

The

obs group does not take a name.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

...

}

Example

obs() {

...

}

Complex Attributes

via

via_iterate

Group

geometry

via Complex Attribute

Use this attribute to specify a via instance at the given coordinates.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

via(via_name

, x

float

, y

float

);

...

}

via_name

The name of a via already defined in the

resource group.

x, y

Floating-point numbers that represent the x- and y-coordinates for placement.

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Example

via(via12, 0, 100) ;

via_iterate Complex Attribute

Use this attribute to specify an array of via instances in a particular pattern.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

via_iterate(num_x

int

, num_y

int

, space_x

float

space_y

float

, via_name

, x

float

, y

float

) ;

...

}

num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Floating-point numbers that specify the value for spacing between each via origin.

via_name

Specifies the name of a previously defined via to be instantiated.

x, y

Floating-point numbers that specify the endpoints.

Example

via_iterate(2, 2, 2.000, 3.000.0, via12, 176.0, 1417.0) ;

geometry Group

Use this group to specify the geometries of an obstruction on the specified macro.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

...

}

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}

layer_name

Specifies the name of the layer where the obstruction is located.

Example

geometry(metal) {

...

}

Simple Attributes

core_blockage_margin

feedthru_area_layer

generate_core_blockage

preserve_current_layer_blockage

treat_current_layer_as_thin_wire

Complex Attributes

max_dist_to_combine_current_layer_blockage

path

path_iterate

polygon

polygon_iterate

rectangle

rectangle_iterate

core_blockage_margin Simple Attribute

Use this attribute to specify a value for computing the margin of a block core.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

core_blockage_margin : value

float

;

...

}

value

A positive floating-point number representing the margin.

Example

core_blockage_margin : 0.0 ;

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feedthru_area_layer Simple Attribute

Use this attribute to prevent an area from being covered with a blockage and to prevent any

merging from occuring within the specified area on the corresponding layer.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

feedthru_area_layer : value

;

...

}

value

A string representing the layer name.

Example

core_blockage_margin : 0.0 ;

generate_core_blockage Simple Attribute

Use this attribute to specify whether to generate the core blockage information.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

generate_core_blockage : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE (default).

Example

generate_core_blockage : TRUE ;

preserve_current_layer_blockage Simple Attribute

Use this attribute to specify whether to preserve the current layer blockage information.

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Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

preserve_current_layer_blockage : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE (default).

Example

preserve_current_layer_blockage : TRUE ;

treat_current_layer_as_thin_wires Simple Attribute

Use this attribute to specify whether to treat the current layer as thin wires.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

treat_current_layer_as_thin_wires : value

Boolean

;

...

}

value

Valid values are TRUE and FALSE (default).

Example

treat_current_layer_as_thin_wires : TRUE ;

max_dist_to_combine_current_layer_blockage Complex Attribute

Use this attribute to specify a maximum distance value, beyond which blockages on the

current layer are not combined.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

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obs() {

geometry(layer_name

) {

max_dist_to_combine_current_layer_blockage

( value

float

, value

float

) ;

...

}

value

Floating-point numbers that represent the maximum distance value.

Example

max_dist_to_combine_current_layer_blockage ( ) ;

path Complex Attribute

Use this attribute to specify a shape by connecting specified points. The drawn geometry is

extended on both endpoints by half the wire width.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

path(width

float

, x1

float

, y1

float

, ..., ...,

float

, yn

float

) ;

...

}

width

Floating-point number that represents the width of the path shape.

x1,y1,..., ...., xn,yn

Floating-point numbers that represent the x- and y-coordinates for each point that

defines a trace. The path shape is extended from the trace outward by one half the width

on both sides. If only one point is specified, a square centered on that point is generated.

The width of the generated square equals the

width value.

Example

path(2.0,1,1,1,4,10,4,10,8) ;

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path_iterate Complex Attribute

Represents an array of paths in a particular pattern.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

path_iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

width

float

, x1

float

, y1

float

,...,

float

, yn

float

)

...

}

num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Specify the value for spacing around the path.

width

Floating-point number that represents the width of the path shape.

x1, y1

Floating-point numbers that represent the first path point.

xn, yn

Floating-point numbers that represent the final path point.

Example

path_iterate(2,1,5.000,5.000,2.0,1,1,1,4,10,4,10,8) ;

polygon Complex Attribute

Represents a rectilinear polygon by connecting all the specified points.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

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geometry(layer_name

) {

polygon(x1, y1, ..., xn, yn) ;

...

}

x1,y1,...,xn,yn

Floating-point numbers that represent the x- and y-coordinates for each point that

defines the shape. Specify a minimum of four points.

You are responsible for ensuring that the resulting polygon is orthogonal.

Example

polygon(175.500, 1414.360, 176.500, 1414.360, 176.500,

1417.360, 175.500, 1417.360) ;

polygon_iterate Complex Attribute

Represents an array of rectilinear polygons in a particular pattern.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

polygon_iterate (num_x

int

, num_y

int

space_x

float

, space_y

float

, y1

float

, x2

float

, x3

float

, y3

float

,...,

float

, yn

float

) ;

...

}

num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Floating-point numbers that specify the value for spacing around the polygon.

x1, y1; x2, y2; x3, y3; ..., ...; xn, yn

Floating-point numbers that represent successive points of the polygon.

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Note:

You must specify at least four points.

Example

polygon_iterate(2, 2, 2.000, 4.000, 175.500, 1414.360,

176.500, 1414.360, 176.500, 1417.360,

175.500, 1417.360) ;

rectangle Complex Attribute

Represents a rectangle.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

rectangle(x1

float

, y1

float

, x2

float

, y2

float

) ;

...

}

x1, y1, x2, y2

Floating-point numbers that specify the coordinates for the diagonally opposite corners

of the rectangle.

Example

rectangle(2, 0, 4, 0) ;

rectangle_iterate Complex Attribute

Represents an array of rectangles in a particular pattern.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

obs() {

geometry(layer_name

) {

rectangle_iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

, y1

float

, x2

float

, y2

float

)

...

}

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num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Floating-point numbers that specify the value for spacing around the rectangles.

x1, y1; x2, y2

Floating-point numbers that specify the coordinates for the diagonally opposite corners

of the rectangles.

Example

rectangle_iterate(2, 2, 2.000, 4.000, 175.500, 1417.360,

176.500, 1419.140) ;

site_array Group

Use this group to specify the site array associated with a cell. The site class and site

symmetry must match the cell class and cell symmetry.

Note:

You can use this attribute only with gate array libraries.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

site_array(site_name

) {

...

}

site_name

The name of a site already defined in the

resource group.

Example

site_array(core) {

...

}

Simple Attribute

orientation

Complex Attributes

iterate

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origin

orientation Simple Attribute

Use this attribute to specify how you place the cells in an array.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

site_array (site_name

) {

orientation : value

enum

;

...

}

value

Valid values are

N (north), E (east), S (south), W (west), FN (flip north), FE (flip east), FS

(flip south), and

FW (flip west), as shown in Figure 7-2.

Figure 7-2 Orientation Examples

Example

orientation : N ;

iterate Complex Attribute

Use this attribute to specify the dimensions and arrangement of an array of sites.

N (north) E (east) S (south) W (west)

FW (flip west)FE (flip east)FN (flip north) FS (flip south)

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Syntax

phys_library(library_name

) {

macro(cell_name

) {

site_array(site_name

) {

iterate(num_x

int

, num_y

int

, space_x

int

space_y

int

) ;

...

}

num_x, num_y

Integer numbers that represent the number of rows and columns in an array,

respectively.

space_x, space_y

Floating-point numbers that represent the row and column spacing, respectively.

Example

iterate(17, 1, 0.98, 11.76) ;

origin Complex Attribute

Use this attribute to specify the origin of a site array.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

site_array (site_name

) {

origin(x

float

, y

float

) ;

...

}

x, y

Floating-point numbers that specify the origin coordinates of the site array.

Example

origin(0.0, 0.0) ;

8-1

Specifying Attributes and Groups in the pin

Group 8

For each cell, you use the macro group to specify the macro-level information and pin

information. Macro-level information includes such properties as symmetry, size and

obstruction. Pin information includes such properties as geometry and position.

This chapter describes the attributes and groups that you define in the

pin group within the

macro group.

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pin Group

Use this group to specify one pin in a cell group.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

}

pin_name

Specifies the name of the pin. This name must be identical to the name of the logical

pin_name that you define in the library.

Example

pin(A) {

...

pin description

...

}

Simple Attributes

capacitance

direction

eq_pin

must_join

pin_shape

pin_type

Complex Attributes

antenna_contact_accum_area

antenna_contact_accum_side_area

antenna_contact_area

antenna_contact_area_partial_ratio

antenna_contact_side_area

antenna_contact_side_area_partial_ratio

antenna_diffusion_area

antenna_gate_area

antenna_metal_accum_area

antenna_metal_accum_side_area

antenna_metal_accum_side_area_partial_ratio

antenna_metal_area

antenna_metal_area_partial_ratio

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Groups

foreign

port

capacitance Simple Attribute

Use this attribute to specify the capacitance value for a pin.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

capacitance : value

float

;

...

}

value

A floating-point number representing the capacitance value.

Example

capacitance : 1.0 ;

direction Simple Attribute

Use this attribute to specify the direction of a pin.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

direction : value

enum

;

...

}

value

Valid values are

inout, input, feedthru, output, and tristate.

Example

direction : inout ;

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eq_pin Simple Attribute

Use this attribute to specify an electrically equivalent pin.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

eq_pin : pin_name

;

...

}

pin_name

The name of an electrically equivalent pin.

Example

eq_pin : A ;

must_join Simple Attribute

Use this attribute to specify the name of a pin that must be connected to the pin_group pin.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

must_join : pin_name

;

...

}

pin_name

The name of the pin that must be connected to the

pin_group pin.

Example

must_join : A ;

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pin_shape Simple Attribute

Use this attribute to specify the pin shape.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

pin_shape : value

enum

;

...

}

value

Valid values are

ring, abutment, and feedthru.

Example

pin_shape : ring ;

pin_type Simple Attribute

Use this attribute to specify what a pin is used for.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

pin_type : value

enum

;

...

}

value

Valid values are

clock, power, signal, analog, and ground.

Example

pin_type : clock ;

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antenna_contact_accum_area Complex Attribute

Use this attribute to specify the cumulative contact area.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_contact_accum_area (value

float

);

...

}

value

A floating-point number that represents the antenna.

Example

antenna_contact_accum_area ( 0.0 ) ;

antenna_contact_accum_side_area Complex Attribute

Use this attribute to specify the cumulative side area.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_contact_accum_side_area (value

float

);

...

}

value

A floating-point number that represents the antenna.

Example

antenna_contact_accum_side_area ( 0.0 ) ;

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antenna_contact_area Complex Attribute

Use this pin-specific attribute and the following attributes to specify contributions coming

from intracell geometries:

antenna_contact_area, antenna_contact_length,

total_antenna_contact_length. These attributes together account for all the

geometries, including the ports of pins that appear in the cell’s physical model.

For black box cells, use this pin-specific attribute along with

antenna_contact_length and

antenna_contact_perimeter to specify the amount of metal connected to a block pin on a

given layer.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_contact_area (value

float

);

...

}

value

A floating-point number that represents the contributions coming from intracell

geometries.

Example

antenna_contact_area (0.3648, 0,0,0,0,0) ;

antenna_contact_area_partial_ratio Complex Attribute

Use this attribute to specify the antenna ratio of a contact.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_contact_area_partial_ratio (value

float

);

...

}

value

A floating-point number that represents the ratio.

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Example

antenna_contact_area_partial_ratio ( 0.0 ) ;

antenna_contact_side_area Complex Attribute

Use this attribute to specify the side wall area of a contact.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_contact_side_area (value

float

);

...

}

value

A floating-point number that represents the ratio.

Example

antenna_contact_side_area ( 0.0 ) ;

antenna_contact_side_area_partial_ratio

Complex Attribute

Use this attribute to specify the antenna ratio using the side wall area of a contact.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_contact_side_area_partial_ratio

(value

float

);

...

}

value

A floating-point number that represents the ratio.

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Example

antenna_contact_side_area_partial_ratio ( 0.0 ) ;

antenna_diffusion_area Complex Attribute

For black box cells, use this attribute to specify the total diffusion area connected to a block’s

pin using layers less than or equal to the pin’s layer.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_diffusion_area (value

float

,value

float

value

float

...) ;

...

}

value

Floating-point numbers representing the total diffusion area.

Example

antenna_diffusion_area (0.0, 0.0, 0.0, ...);

antenna_gate_area Complex Attribute

For black box cells, use this attribute to specify the total gate area connected to a block’s pin

using layers less than or equal to the pin’s layer.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_gate_area (value

float

,value

float

value

float

...) ;

...

}

value, value, value, ...

Floating-point numbers that represent the total gate area.

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Example

antenna_gate_area (0.0, 0.0, 0.0, ...) ;

antenna_metal_accum_area Complex Attribute

Use this attribute to specify the cumulative metal area.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_metal_accum_area (value

float

);

...

}

value

A floating-point number that represents the antenna.

Example

antenna_metal_accum_area () ;

antenna_metal_accum_side_area Complex Attribute

Use this attribute to specify the cumulative side area.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_metal_accum_side_area (value

float

);

...

}

value

A floating-point number that represents the antenna.

Example

antenna_metal_accum_side_area () ;

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antenna_metal_area Complex Attribute

Use this pin-specific attribute and antenna_metal_area to specify contributions coming from

intracell geometries. These attributes together account for all the geometries, including the

ports of pins that appear in the cell’s physical model.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_metal_area (value

float

);

...

}

value

A floating-point number that represents the contributions coming from intracell

geometries.

Example

antenna_metal_area (0.3648, 0,0,0,0,0) ;

antenna_metal_area_partial_ratio Complex Attribute

Use this attribute to specify the antenna ratio of a metal wire.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_metal_area_partial_ratio (value

float

);

...

}

value

A floating-point number that represents the ratio.

Example

antenna_metal_area_partial_ratio () ;

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antenna_metal_side_area Complex Attribute

Use this attribute to specify the side wall area of a metal wire.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_metal_side_area (value

float

);

...

}

value

A floating-point number that represents the ratio.

Example

antenna_metal_side_area () ;

antenna_metal_side_area_partial_ratio

Complex Attribute

Use this attribute to specify the antenna ratio using the side wall area of a metal wire.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

antenna_metal_side_area_partial_ratio (value

float

);

...

}

value

A floating-point number that represents the ratio.

Example

antenna_metal_side_area_partial_ratio () ;

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foreign Group

Use this group to specify which GDSII structure (model) to use when an instance of a pin is

placed. Only one

foreign group is allowed in a library.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

foreign(foreign_object_name

) {

...

}

foreign_object_name

The name of the GDSII structure (model).

Example

foreign(via34) {

...

}

Simple Attribute

orientation

Complex Attribute

origin

orientation Simple Attribute

Use this attribute to specify how you place the cells in an array in relation to the VDD and

VSS buses.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

foreign(foreign_object_name

) {

orientation : value

enum

;

...

}

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}

value

Valid values are

N (north), E (east), S (south), W (west), FN (flip north), FE (flip east), FS

(flip south), and

FW (flip west), as shown in Figure 8-1.

Figure 8-1 Orientation Examples

Example

orientation : N ;

origin Complex Attribute

Use this attribute to specify the equivalent coordinates of a placed foreign origin.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

...

foreign(foreign_object_name

) {

...

origin(x

float

, y

float

) ;

}

x,y

Floating-point numbers that specify the coordinates of the foreign object’s origin.

N (north) E (east) S (south) W (west)

FW (flip west)FE (flip east)FN (flip north) FS (flip south)

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Example

origin(-1, -1) ;

port Group

Use this group to specify the port geometries for a pin.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

...

}

Note:

The

port group does not take a name.

Example

port() {

...

}

Complex Attributes

via

via_iterate

Group

geometry

via Complex Attribute

Use this attribute to instantiate a via relative to the origin implied by the coordinates (typically

the center).

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

via(via_name

, x, y) ;

...

}

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via_name

A previously defined via.

The horizontal coordinate.

The vertical coordinate.

Example

via(via23, 25.00, -30.00) ;

via_iterate Complex Attribute

Use this attribute to instantiate an array of vias in a particular pattern.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

...

via_iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

via_name

, x

float

, y

float

) ;

...

}

num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Floating-point numbers that specify the value for spacing around each via.

via_name

Specifies the name of a previously defined via.

x, y

Floating-point numbers that specify the location of the first via.

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Example

via_iterate(2, 2, 100, 100, via12, 0, 0) ;

geometry Group

Use this group to specify the geometry of an obstruction or a port.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

...

geometry(layer_name

) {

}

layer_name

The layer where the shape is defined.

Example

geometry(cut01) {

...

}

Complex Attributes

path

path_iterate

polygon

polygon_iterate

rectangle

rectangle_iterate

path Complex Attribute

Use this attribute to specify a shape by connecting specified points. The drawn geometry is

extended by half the default wire width of the layer on both endpoints.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

geometry(layer_name

) {

path(width

float

, x1

float

, y1

float

, ..., ...,

float

, yn

float

)

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...

}

width

Floating-point number that represents the width of the path shape.

x1,y1; ..., ....; xn,yn

Floating-point numbers that represent the x- and y-coordinates for each point that

defines a trace. The path shape is extended from the trace by one half of the width on

both sides. If only one point is specified, a square centered on that point is generated.

The width of the generated square equals the width value.

Example

path(1,1,4,4,10,10,5,10) ;

path_iterate Complex Attribute

Use this attribute to specify an array of paths in a particular pattern.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

geometry(layer_name

) {

...

path_iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

width

float

, x1

float

, y1

float

,...,

float

, yn

float

)

...

}

num_x, num_y

Integer numbers that, respectively, represent the number of columns and rows in the

array.

space_x, space_y

Floating-point numbers that specify the value for spacing around the path.

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width

Floating-point number that represents the width of the path shape.

x1, y1

Floating-point numbers that represent the first path point.

xn, yn

Floating-point numbers that represent the final path point.

Example

path_iterate(2, 1, 5.000, 5.000, 1.000, 174.500, 1419.140,

177.500, 1422.140) ;

polygon Complex Attribute

Use this attribute to specify a rectilinear polygon by connecting all the specified points.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

geometry(layer_name

) {

...

polygon(x1

float

, y1

float

; ..., ...,

float

, yn

float

)

...

}

x1,y1; ..., ....; xn,yn

Floating-point numbers that represent the x- and y-coordinates for each point that

defines the shape. You should specify a minimum of four points.

Note:

You are responsible for ensuring that the resulting polygon is rectilinear.

Example

polygon(175.500, 1414.360, 176.500, 1414.360, 176.500,

1417.360, 175.500, 1417.360) ;

polygon_iterate Complex Attribute

Use this attribute to specify an array of polygons in a particular pattern.

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Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

geometry(layer_name

) {

...

polygon_iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

, y1

float

, x2

float

, x3

float

, y3

float

,...,

float

, yn

float

)

...

}

num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Floating-point numbers that specify the value for spacing around the polygon.

x1, y1; x2, y2; x3, y3; ..., ...; xn, yn

Floating-point numbers that represent successive points of the polygon.

Note:

You must specify at least four points.

Example

polygon_iterate(2, 2, 2.000, 4.000, 175.500, 1414.360,

176.500, 1414.360, 176.500, 1417.360,

175.500, 1417.360) ;

rectangle Complex Attribute

Use this attribute to specify a rectangular shape.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

geometry(layer_name

) {

...

rectangle(x1

float

, y1

float

, x2

float

, y2

float

)

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...

}

x1, y1, x2, y2

Floating-point number that specify the coordinates for the diagonally opposing corners of

the rectangle.

Example

rectangle(2, 0, 4, 0) ;

rectangle_iterate Complex Attribute

Use this attribute to specify an array of rectangles in a particular pattern.

Syntax

phys_library(library_name

) {

macro(cell_name

) {

pin(pin_name

) {

port() {

geometry(layer_name

) {

...

rectangle_iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

, y1

float

, x2

float

, y2

float

)

...

}

num_x, num_y

Integer numbers that represent the number of columns and rows in the array,

respectively.

space_x, space_y

Floating-point numbers that specify the value for spacing around the rectangles.

x1, y1; x2, y2

Floating-point numbers that specify the coordinates for the diagonally opposite corners

of the rectangles.

Example

rectangle_iterate(2, 2, 2.000, 4.000, 175.5, 1417.360,

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176.500, 1419.140) ;

9-1

Developing a Physical Library 9

The physical library specifies the information required for floor planning, RC estimation and

extraction, placement, and routing.

You use the physical library syntax (.plib) to model your physical library.

This chapter includes the following sections:

• Creating the Physical Library

• Naming the Source File

• Naming the Physical Library

• Defining the Units of Measure

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Creating the Physical Library

This section describes how to name your source file and library, and how to define the units

of measure for properties in your library.

Naming the Source File

The recommended file name suffix for physical library source files is .plib.

Example

myLib.plib

Naming the Physical Library

You specify the name for your physical library in the phys_library group, which is always

the first executable line in a library source file.

Syntax

phys_library(library_name

) {

...

}

Use the comment, date, and revision attributes to document your library source file.

Example

phys_library(sample) {

comment : "my library" ;

date : "1st Jan 2002" ;

revision : "Revision 2.0.5" ;

}

Defining the Units of Measure

Use the phys_library group attributes described in Tabl e 9- 1 to specify the units of

measure for properties such as capacitance and resistance. The unit statements must

precede other definitions, such as the technology data, design rules, and macros.

Syntax

phys_library (library_name

) {

...

attribute_name : value

enum

;

...

}

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Example

phys_library(sample) {

capacitance_unit : 1pf ;

distance_unit : 1um ;

resistance_unit : 1ohm ;

...

}

Ta bl e 9 - 1 lists the attribute names and values that you can use to define the units of

measure.

Table 9-1 Units of Measure

Property Attribute name Legal values

Capacitance capacitance_unit 1pf, 1ff, 10ff, 100ff

Distance distance_unit 1um, 1mm

Resistance resistance_unit 1ohm, 100ohm, 10ohm, 1kohm

Time time_unit 1ns, 100ps, 10ps, 1ps

Voltage voltage_unit 1mV, 10mV, 100mV, 1V

Current current_unit 100uA, 100mA, 1A, 1uA, 10uA,

1mA, 10mA

Power power_unit 1mw

Database

distance

resolution

dist_conversion_factor Any multiple of 100

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10-1

Defining the Process and Design Parameters10

The physical library specifies the information required for floor planning, RC estimation and

extraction, placement, and routing.

You use the physical library syntax (.plib) to model your physical library.

This chapter includes the following sections:

• Defining the Technology Data

• Defining the Architecture

• Defining the Layers

• Defining Vias

• Defining the Placement Sites

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Defining the Technology Data

Technology data includes the process and electrical design parameters. Site-array and cell

data refer to the technology data; therefore, you must define the layer data before you define

site-array and cell data.

Defining the Architecture

You specify the architecture and the layer information in the resource group inside the

phys_library group.

Syntax

phys_library(library_name

) {

resource(architecture

enum

) {

...

}

architecture

The valid values are

std_cell and array.

Example

phys_library(mylib) {

...

resource(std_cell) {

...

}

Defining the Layers

The layer definition is order dependent. You define the layers starting with the layer closest

to the substrate and ending with the layer furthest from the substrate.

Depending on their purpose, the layers can include

• Contact layer

• Overlap layer

• Routing layer

•Device layer

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Contact Layer

Contact layers define the contact cuts that enable current to flow between the device and the

first routing layer or between any two routing layers; for example, cut01 between poly and

metal1, or cut12 between metal1 and metal2. You define the contact layer by using the

contact_layer attribute inside the resource group.

Syntax

resource(architecture

enum

) {

contact_layer(layer_name

)

...

}

Example

contact_layer(cut01) ;

Overlap Layer

An overlap layer provides accurate overlap checking of rectilinear blocks. You define the

overlap layer by using the

overlap_layer attribute inside the resource group.

Syntax

resource(architecture

enum

) {

overlap_layer(layer_name

)

...

}

Example

resource(std_cell) {

overlap_layer(mod) ;

...

}

Routing Layer

You define the routing layer and its properties by using the routing_layer group inside the

resource group.

Syntax

resource(architecture

enum

) {

routing_layer(layer_name

) {

attribute : value

float

;

...

}

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Example

resource(std_cell) ; {

routing_layer(m1) { /* metal1 layer definition */

cap_per_sq : 3.200e-04 ;

default_routing_width : 3.200e-01 ;

res_per_sq : 7.000e-02 ;

routing_direction : horizontal ;

pitch : 9.000e-01;

spacing : 3.200e-01 ;

cap_multiplier : ;

shrinkage : ;

thickness : ;

}

Table 10-1 lists the attributes you can use to specify routing layer properties.

Note:

All numerical values are floating-point numbers.

Table 10-1 Routing Layer Simple Attributes

Attribute name Valid values Property

default_routing_width > 0.0 Minimum metal width allowed on the layer;

the default width for regular wiring

cap_per_sq > 0.0 Capacitance per square unit between a layer

and a substrate, used to model

wire-to-ground capacitance

res_per_sq > 0.0 Resistance per square unit

coupling_cap > 0.0 Coupling capacitance between parallel wires

on the same layer

fringe_cap > 0.0 Fringe (sidewall) capacitance per unit length

of a routing layer

routing_direction horizontal,

vertical

Preferred routing direction

pitch > 0.0 Routing pitch

spacing > 0.0 Default different net spacing (edge-edge) for

regular wiring on a layer

cap_multiplier > 0.0 Cap multiplier; accounts for changes in

capacitance due to nearby wires

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Specifying Net Spacing

Use the ranged_spacing complex attribute to specify the different net spacing for special

wiring on the layer. You can also use this attribute to specify the minimum spacing for a

particular routing width range of the metal. You can use more than one

ranged_spacing

attribute to specify spacing rules for different ranges.

Each

ranged_spacing attribute requires floating-point values for the minimum width for the

wiring range, the maximum width for the wiring range, and the minimum spacing for the net.

Syntax

resource(architecture

enum

) {

routing_layer(layer_name

) {

...

ranged_spacing(value

float

, value

float

, value

float

) ;

...

}

Example

routing_layer(m1) {

...

ranged_spacing(1.60, 2.40, 1.20) ;

...

}

shrinkage > 0.0 Shrinkage of metal

EffWidth = MetalWidth – Shrinkage

thickness > 0.0 Thickness

height >0.0 The distance from the top of the substrate to

the bottom of the routing layer

offset > 0.0 The offset from the placement grid to the

routing grid

edgecapacitance > 0.0 Total peripheral capacitance per unit length

of a wire on the routing layer

inductance_per_dist > 0.0 Inductance per unit length of a routing layer

antenna_area_factor > 0.0 Antenna effect; to limit the area of wire

segments

Table 10-1 Routing Layer Simple Attributes (continued)

Attribute name Valid values Property

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Device Layer

Device layers make up the transistors below the routing layers—for example, the poly layer

and the active layer. To define the device layer, use the

device_layer attribute inside the

resource group.

Wires are not allowed on device layers. If pins appear in the device layer, you must define

vias to permit the router to connect the pins to the first routing layer.

Syntax

resource(architecture

enum

) {

device_layer(layer_name

) ;

...

}

Example

resource(std_cell) {

device_layer (poly) ;

...

}

Defining Vias

A via is the routing connection for wires in each pair of connected layers. Vias typically

comprise three layers: the two connected layers and the cut layer between the connected

layers.

Naming the Via

You define the via name in the via group inside the resource group.

Syntax

resource(architecture

enum

) {

via(via_name

) {

...

}

Example

resource(std_cell) {

...

via(via23) {

...

}

...

}

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Defining the Via Properties

You define the via properties by using the following attributes inside the via group.

•

is_default

• top_of_stack_only

• resistance

Syntax

via(via_name

) {

is_default : Boolean ;

top_of_the_stack : Boolean ;

resistance : float ;

...

}

Example

via(via23) {

is_default : TRUE;

top_of_stack_only : FALSE;

resistance : 1.0;

...

}

Table 10-2 lists the properties you can define with the via attributes.

Defining the Geometry for Simple Vias

Define the via geometry (or geometries) by using via_layer groups inside a via group.

Each

via_layer group defines the via geometry for one layer. Use the name of the layer as

the

via_layer group name.

The layer1 and layer2 layers are the adjacent routing layers, where layer1 is closer to the

substrate. The contact layer is the cut layer between layer1 and layer2.

For rectilinear vias, you define the geometry by using more than one rectangle function for

the corresponding layer.

Table 10-2 Defining Via Properties

Attribute name Valid values Property

is_default TRUE, FALSE Default via for a given layer pair

top_of_stack_only TRUE, FALSE Use only on top of a via stack

resistance floating-point

number

Resistance per contact-cut rectangle

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Syntax

via_layer(layer1_name

) {

rectangle(x11

float

, y11

float

, x21

float

, y21

float

) ;

/* 1 or more rectangles */

}

via_layer(contact_name

) {

rectangle(x1c

float

, y1c

float

, x2c

float

, y2c

float

) ;

/* 1 or more rectangles */

}

via_layer(layer2_name

) {

rectangle(x12

float

, y12

float

, x22

float

, y22

float

) ;

/* 1 or more rectangles */

}

where (x11, y11), (x21, y21), (x1c, y1c), (x2c, y2c), (x21, y12), and (x22, y22) are the

coordinates of the opposite corners of the rectangle.

Example

via(via 45) {

is_default : TRUE ;

resistance : 1.5 ;

via_layer(metal4) {

rectangle(-0.3, -0.3, 0.3, 0.3) ;

}

via_layer(cut45) {

rectangle(-0.18, -0.18, 0.18, 0.18) ;

}

via_layer(meta15) {

rectangle(-0.27, -0.27, 0.27, 0.27) ;

}

Defining the Geometry for Special Vias

Special vias are vias that have

• Fewer than three layers, with one layer being a contact layer

• More than three layers

Vias With Fewer Than Three Layers

To define vias that have fewer than three layers, use the

via_layer group, as shown below.

Syntax

via_layer(via_name

) {

rectangle(x1

float

, y1

float

, x2

float

, y2

float

) ;

}

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where (x1, y1) and (x2, y2) are the coordinates (floating-point numbers) for the opposite

corners of the rectangle, as shown in Figure 10-1.

Figure 10-1 Coordinates of a Rectangle

Example

via_layer(cut23) {

rectangle(-0.18, -0.18, 0.18, 0.18) ;

}

Vias With More Than Three Layers

For vias with more than three layers, use multiple

via_layer groups. You can have more

than one

via_layer group in your physical library.

Syntax

via_layer (via_name

) {

rectangle(x1

float

, y1

float

, x2

float

, y2

float

) ;

}

where (x1, y1) and (x2, y2) are the coordinates (floating-point numbers) for the opposite

corners of the rectangle.

Example

via(via123) {

resistance : 1.5 ;

via_layer(met1) {

rectangle(-0.3. -0.3, 0.3, 0.3):

}

via_layer(cut12) {

rectangle(-0.2. -0.2, 0.2, 0.2):

}

via_layer(met2) {

rectangle(-0.3. -0.3, 0.3, 0.3):

}

via_layer(met23) {

rectangle(-0.2. -0.2, 0.2, 0.2):

}

)

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via_layer (met3) {

rectangle(-0.3, -0.3, 0.3, 0.3) ;

}

Referencing a Foreign Structure

Use the foreign group to specify which GDSII structure (model) to use when you place an

instance of the via. You also use this group to specify the orientation and the offset with

respect to the GDSII structure origin.

Note:

Only one foreign reference is allowed for each via.

Syntax

foreign(foreign_structure_name

) {

orientation : N | E | W | S | FN | FE | FW | FS ;

origin(x

float

, y

float

) ;

}

where x and y represent the offset distance.

Example

via(via34) {

is_default : TRUE ;

resistance : 2.0e-02 ;

foreign(via34) {

orientation : FN ;

origin(-1, -1) ;

}

...

}

Defining the Placement Sites

For each class of cells (such as cores and pads), you must define the available sites for

placement. The methodology you use for defining placement sites depends on whether you

are working with standard cell technology or gate array technology.

Standard Cell Technology

For standard cell technologies you define the placement sites by defining the site name in

the

site group inside the resource group, and by defining the site properties using the

following attributes inside the

site group:

•The

site_class attribute specifies the site class. Two types of placement sites are

supported:

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❍ Core (core cell placement)

❍ Pad (I/O placement)

•The

symmetry attribute specifies the site symmetry with respect to the x- and y-axes.

Note:

If you do not specify the

symmetry attribute, the site is considered asymmetric.

•The

size attribute specifies the site size.

Syntax

resource(architecture

enum

) {

site(site_name

) {

site_class : core | pad ;

symmetry : x | y | r | xy | rxy ;

size(x_size

float

, y_size

float

) ;

}

site_name

The name of the library site. Common practice is to describe the function of the site (core

or pad) with the site name.

You can assign one of the following values to the

symmetry attribute:

Specifies symmetry about the x-axis

Specifies symmetry about the y-axis

Specifies symmetry in 90 degree counterclockwise rotation

Specifies symmetry about the x-axis and the y-axis

rxy

Specifies symmetry about the x-axis and the y-axis and in 90 degree counterclockwise

rotation increments

Figure 10-2 shows the relationship of the symmetry values to the axis.

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Figure 10-2 Examples of X, Y, and R Symmetry

Gate Array Technology

Follow these guidelines when working with gate array technologies:

• Define the basic sites for the core and pad in the same way you would for standard cell

technologies.

• Use the

array group to define arrays for the site, the floorplan, and the detail routing grid

descriptions. You define the

array group inside the resource group.

Defining the Floorplan Set

A floorplan is an array of sites that allow or disallow the placement of cells. You define a

floorplan group or multiple floorplan groups inside an array group.

A floorplan without a name becomes the default floorplan. Subsequently, when no floorplan

is specified, the default floorplan is used. Figure 10-3 shows the elements of a floorplan on

a die.

X Symmetry Y Symmetry R Symmetry

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Figure 10-3 Elements of a Floorplan

Instantiating the Site Array

You instantiate arrays by using the

site_array group inside the floorplan group. The

orientation, availability for placement, origin, and the array pattern (that is, the number of

rows and columns, as well as the row spacing and column spacing) are all defined in the

site_array group.

Syntax

site(site_name

) {

stateless : pad | core;

symmetry : x | y | r | xy | rxy ;

size(x_size

float

, y_size

float

) ;

}

array(array_name

) {

...

floorplan(floorplan_name

) {

site_array(site_name

) {

orientation : N | E | W | S | FN | FE | FW | FS ;

placement_rule : regular | can_place |

cannot_place ;

origin(x

float

, y

float

) ;

iterate(num_x

int

, num_y

int

space_x

float

, space_y

float

) ;

}

pad

core

site

site arrays

die

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Table 10-3 shows the values and description for each of the attributes you use to define

placement sites.

Example

site(core) {

site_class : core ;

symmetry : x ;

size (1, 10) ;

}

array(samplearray) {

...

floorplan() { /* default floorplan */

site_array(core) { /* Core cells placement */

orientation : N ;

placement_rule : can_place; /* available for placement */

origin(0, 0) ;

iterate(2, 4, 1.5, 0) ; /* site_array has 2 sites in x */

/*direction spaced 1.5 um apart, 4 */

Table 10-3 Placement Site Definitions

Attribute Valid values Description

site_class pad I/O cell placement site

core Core cell placement site

symmetry x, y, r, xy, rxy Symmetry

width, height Site dimensions

orientation N, E, W, S, FN, FE, FW,

Orientation

placement_rule can_place Site array available for floorplan

cannot_place Site array not available for floorplan

regular Placement grid

origin x, y Coordinate of the origin of site array

iterate num_x Number of columns in the site array

num_y Number of rows in the site array

space_x Column spacing (float)

space_y Row spacing (float)

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/*sites in y direction, spaced */

/*1.5 um apart */

}

Defining the Global Cell Grid

You define the global cell grid overlaying the array by using the

routing_grid attribute

inside the

array group. The router uses this grid during global routing.

Syntax

array(array_name

) {

routing_grid() {

routing_direction : horizontal | vertical ;

grid_pattern (start

float

, grids

integer

, spacing

float

) ;

}

where

start

A floating-point number representing the starting-point coordinate

grids

An integer number representing the number of grids in the x and y directions

spacing

A floating-point number representing the spacing between the grids in the x and y

directions

Example

array(samplearray) {

routing_grid(0, 3, 1, 0, 3, 1) ;

routing_direction(horizontal) ;

grid_pattern(, ,) ;

...

}

Defining the Detail Routing Grid

You specify the routing track grid for the gate array by using the

tracks group inside the

array group. In the tracks group, you specify the track pattern, the track direction, and the

layers available for the associated tracks.

Note:

Define one

tracks group for horizontal routing and one for vertical routing.

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Syntax

array(array_name

) {

...

tracks() {

layers : "layer_1", "layer_2", ..."layer_n" ;

routing_direction : vertical | horizontal ;

track_pattern(start_point

float

, num_of_tracks

float

space_between_tracks

float

) ;

}

where

start_point

A floating-point number representing the starting-point coordinate

num_of_tracks

A floating-point number representing the number of parallel tracks

space_between

A floating-point number representing the spacing between the tracks

Example

phys_library(example) {

...

resource(array) { /* gate array technology */

...

array(samplearray) {

...

tracks() {

layers : "m1", "m3" ;

routing_direction : horizontal ;

track_pattern(1, 50, 10) ;

/* 50 horizontal tracks 10 microns apart */

} /* end tracks */

tracks() {

layers : "m1", "m2" ;

routing_direction : vertical ;

track_pattern(1, 50, 10) ;

/* 50 vertical tracks 10 microns apart */

}/* end tracks */

} /* end array */

} /* end resource */

...

} /* end phys_library */

11-1

Defining the Design Rules 11

Specify design rules for the technology, such as minimum spacing and width, by using the

topological_design_rules group.

This chapter includes the following sections:

• Defining Minimum Via Spacing Rules in the Same Net

• Defining Same-Net Minimum Wire Spacing

• Defining Same-Net Stacking Rules

• Defining Nondefault Rules for Wiring

• Defining Rules for Selecting Vias for Special Wiring

• Defining Rules for Generating Vias for Special Wiring

• Defining the Generated Via Size

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Defining the Design Rules

The following sections describe how you define the design rules for physical libraries.

Defining Minimum Via Spacing Rules in the Same Net

The design rule checker requires the value for the edge-to-edge minimum spacing between

vias.

Use the

contact_min_spacing attribute for defining the minimum spacing between

contacts in different nets. This attribute requires the name of the two contact layers and the

spacing distance. To specify the minimum spacing between the same contact, use the same

contact layer name twice.

Syntax

topological_design_rules() {

contact_min_spacing(contact_layer1

contact_layer2

, spacing

float

) ;

...

}

Example

phys_library(sample) {

...

topological_design_rules() {

...

contact_min_spacing(cut01, cut12, 1) ;

...

}

...

}

Defining Same-Net Minimum Wire Spacing

You can specify the minimum wire spacing between contacts in the same net by using the

same_net_min_spacing attribute. To specify the minimum spacing between the same

contact, use the same contact layer name twice.

Syntax

topological_design_rules() {

same_net_min_spacing(layer1_name

, layer2_name

spacing

float

, ...) ;

...

}

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Example

topological_design_rules() {

same_net_min_spacing(m1, m1, 0.4, ...) ;

same_net_min_spacing(m3, m3, 0.4, ...) ;

...

}

Defining Same-Net Stacking Rules

You can specify stacking for vias that share the same routing layer by setting the is_stack

parameter in the

same_net_min_spacing attribute to TRUE.

Syntax

topological_design_rules() {

same_net_min_spacing(layer1_name

, layer2_name

spacing

float

, is_stack

Boolean

) ;

...

}

Example

topological_design_rules() {

same_net_min_spacing(m1, m1, 0.4, TRUE) ;

same_net_min_spacing(m3, m3, 0.4, FALSE) ;

...

}

Defining Nondefault Rules for Wiring

For all regular wiring, you define the default rules by using either the layer group or the via

group in the

resource group. You define the nondefault rules for wiring by using the

wire_rule group in the topological_design_rules group as shown here:

phys_library(sample) {

...

topological_design_rules() {

...

wire_rule(rule1) {

via(non_default_via12) {

...

}

You define the width, different net minimum spacing (edge-to-edge), and the wire extension

by using the

layer_rule group. The width and spacing specifications override the default

values defined in the

routing_layer group.

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phys_library(sample) {

...

topological_design_rules() {

...

layer_rule(metal1) {

/* non default regular wiring rules for metal1 */

wire_width : 0.4 ; /* default is 0.32 */

min_spacing : 0.4 ; /* default is 0.32 */

wire_extension : 0.25 ; /* default is 0.4/2 */

} /*end layer rule */

}

Use the via group in the wire_rule group to define nondefault vias associated with the

routing layers. This via group is similar to the

via group in the resource group except that

the

is_default attribute is absent. For regular wiring, the via defined in the wire_rule

group is considered instead of the default via defined in the

resource group whenever the

wire width matches the width specified in the

via or layer group.

phys_library(sample) {

...

topological_design_rules() {

...

wire_rule(rule1) {

via(non_default_via12) {

...

}

For nondefault regular wiring, you define the via and routing layer spacing and the stacking

rules by using the

same_net_min_spacing attribute inside the wire_rule group. This

attribute overrides the default values in the

same_net_min_spacing attribute inside the

topological_design_rules group.

phys_library(sample) {

...

topological_design_rules() {

...

wire_rule(rule1) {

same_net_min_spacing(m1, m1, 0.32, FALSE) ;

same_net_min_spacing(m2, m2, 0.4, FALSE) ;

same_net_min_spacing(cut01, cut01, 0.36, FALSE) ;

same_net_min_spacing(cut12, cut12, 0.36, FALSE) ;

} /* end wire rule */

} /* end design rules */

} /* end phys_library */

Use the vias attribute in the via_rule group to specify a list of vias. The router selects the

first via that satisfies the design rules.

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Defining Rules for Selecting Vias for Special Wiring

The via_rule group inside a topological_design_rules group defines vias used at the

intersection of special wires in the same net.

You can specify multiple

via_rule groups for a given layer pair. The rule that governs the

selection of a

via_rule group is the routing wire width range. When the width of a special

wire is within the range specified, then the via rule is selected. When no via rule applies, then

the default via rule is applied. The default via rule is created when you omit the routing wire

width specification.

You also specify contact overhang and metal overhang, in both the horizontal and vertical

directions, in the

via_rule group. Contact overhang is the minimum amount of metal (wire)

between the contact and the via edge. Metal overhang is at the edges of wire intersection.

Figure 11-1 shows these relationships.

Figure 11-1 Contact Overhang and Metal Overhang

Syntax

topological_design_rules() {

...

via_rule(via_rule_name

) {

vias : list_of_vias

;

routing_layer_rule(routing_layer_name

) {

/* one for each layer associated with the via; */

/* normally 2. */

routing_direction : value

enum

;

/* direction of the overhang */

contact_overhang : value

float

;

metal_overhang : value

float

;

min_wire_width : value

float

;

max_wire_width : value

float

;

Cut

Metal overhang

Contact overhang

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}

Example

topological_design_rules() {

...

via_rule(default_rule_for_m1_m2) {

/* default via rule for the metal1, metal2 pair; */

/* no wire width range is specified */

vias : "via12, via23" ;

/* select via12 or via23 - whichever satisfies */

/* the design rules*/

routing_layer_rule(metal1) {

routing_direction : horizontal ;

contact_overhang : 0.1 ;

metal_overhang : 0 ;

}

routing_layer_rule(metal2) {

routing_direction : vertical ;

contact_overhang : 0.1 ;

metal_overhang : 0 ;

}

...

}

Defining Rules for Generating Vias for Special Wiring

Use the via_rule_generate group to specify the rules for generating vias used at the

intersection of special wires in the same net. You define this group inside the

topological_design_rules group. You can specify multiple via_rule_generate groups

for a given layer pair.

The rule that governs the selection of a

via_rule group is the routing wire width range.

When the width of the special wire is within the range specified, then the via rule is selected.

When no via rule applies, then the default via rule is applied. The default via rule is created

when you omit the routing wire width specification.

Use the

vias attribute in the via_rule_generate group to specify a list of vias. The router

selects the first via that satisfies DRC. You also specify contact overhang and metal

overhang, in both the horizontal and vertical directions, in the

via_rule_generate group.

Contact overhang is the minimum amount of metal (wire) between the contact and the via

edge. Metal overhang is at the edges of wire intersection.

You specify the contact layer geometry generation formula in the

contact_formula group

inside the

via_rule_generate group. The number of contact cuts in the generated array is

determined by the contact spacing, contact-cut geometry, and the overhang (both contact

and metal).

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Syntax

topological_design_rules() {

...

via_rule_generate(via_rule_name

) {

routing_layer_formula(routing_layer_name

) {

/* one for each layer associated with the via */

/* normally 2 */

routing_direction : value

enum

;

/* direction of the overhang */

contact_overhang : value

float

;

metal_overhang : value

float

;

min_wire_width : value

float

;

max_wire_width : value

float

;

}

contact_formula(contact_layer_name) {

rectangle(x1

float

, y1

float

, x2

float

, y2

float

) ;

/* specify more than 1 rectangle for */

/* rectilinear vias */

contact_spacing(x_spacing

float

, y_spacing

float

)

resistance : value

float

}

Example

phys_library(sample) {

...

resource(std_cell) { /* standard cell technology */

...

} /* end resource */

topological_design_rules() { /* design rules */

same_net_min_spacing(m1, m1, 0.32, FALSE) ;

/* minimum spacing required between 2 metal1 layers in the same net */

same_net_min_spacing(m2, m2, 0.4, FALSE) ;

/* minimum spacing required between 2 metal2 layers in the same net */

same_net_min_spacing(m3, m3, 0.4, FALSE) ;

/* minimum spacing required between 2 metal3 layers in the same net */

same_net_min_spacing(cut01, cut01, 0.36, FALSE) ;

/* minimum spacing required between 2 contact cut01 layers in the same net */

same_net_min_spacing(cut12, cut12, 0.36, FALSE) ;

/* minimum spacing required between 2 contact cut12 layers in the same net */

same_net_min_spacing(cut23, cut23, 0.36, FALSE) ;

/* minimum spacing required between 2 contact cut23 layers in the same net */

/* via generation rules */

via_rule_generate(default_rule_for_m1_m2) {

routing_layer_formula(metal1) {

routing_direction : horizontal ;

contact_overhang : 0.1 ;

metal_overhang : 0.0 ;

}

routing_layer_rule(metal2) {

routing_direction : vertical ;

contact_overhang : 0.1 ;

metal_overhang : 0 ;

}

contact_formula(cut12) { /* rule for generating contact cut array */

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rectangle(-0.2, -0.2, 0.2, 0.2) ; /* cut shape */

contact_spacing(0.8, 0.8) ; /* center-to-center spacing */

resistance : 1.0 ; /* cut resistance */

}

} /* end via_rule_generate */

via_rule_generate(default_rule_for_m2_m3) {

routing_layer_formula(metal2) {

routing_direction : vertical ;

contact_overhang : 0.1 ;

metal_overhang : 0.0 ;

}

routing_layer_rule(metal3) {

routing_direction : horizontal ;

contact_overhang : 0.1 ;

metal_overhang : 0 ;

}

contact_formula(cut23) { /* rule for generating contact cut array */

rectangle(-0.2, -0.2, 0.2, 0.2) ; /* cut shape */

contact_spacing(0.8, 0.8) ; /* center-to-center spacing */

resistance : 1.0 ; /* cut resistance */

}

} /* end via_rule_generate */

} /* end design rules */

macro(and2) {

...

} /* end macro */

} /* end phys_library */

Defining the Generated Via Size

Generated vias are a multiple of the minimum feature size. The lithographic grid determines

the minimum feature size for the technology.

Syntax

min_generated_via_size(x_size

float

, y_size

float

) ;

A-1

Parasitic RC Estimation in the Physical

Library A

This chapter includes the following sections:

• Modeling Parasitic RC Estimation

• Variables Used in Parasitic RC Estimation

• Equations for Parasitic RC Estimation

• .plib Format

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Modeling Parasitic RC Estimation

Figure A-1 provides an overview of the measures used in the parasitic RC estimation model.

Figure A-1 Parasitic RC Estimation Model

The following sections provide information about the variables and equations you use to

model parasitic RC estimation.

Variables Used in Parasitic RC Estimation

The following sections list and describe the routing layer and routing wire variables you need

to define in the RC estimation model.

Variables for Routing Layers

Define the following set of variables for each routing_layer group in your physical library.

Variable Description

res_per_sq Resistance per square of a res_per_sq routing layer.

CP : Plate capacitance

CC : Coupling capacitance

CF : Fringe capacitance

Routing layer a

Routing layer b

Substrate

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Variables for Estimated Routing Wire Model

Define the following set of variables for each routing_wire_model group in your physical

library. Each

routing_wire_model group represents a statistics-based design-specific

estimation of interconnect topology.

overlap_wire_ratio

Percentage of the wiring on the first layer that overlaps the second layer. This function

specifies all overlap_wire_ratio values in an n*(n-1) sized array, where n is the number of

routing layers. For example, the overlap_wire_ratio values for the first routing layer

(routing layer 1) are specified in overlap_wire_ratio[0] to overlap_wire_ratio[n-2]. The

values for routing layer 2 are specified in overlap_wire_ratio[n-1] to

overlap_wire_ratio[2(n-1)].

cap_per_sq Substrate capacitance per cap_per_sq square of a poly

or metal layer (CP layer).

coupling_cap Coupling capacitance per unit length between parallel

wires on the same layer (CC layer).

fringe_cap Fringe (sidewall) capacitance per unit length of a routing

layer (CF layer).

edgecapacitance Total fringe capacitance per unit length of routing layer.

Specifies capacitance due to fringe, overlapping, and

coupling effect.

inductance_per_dist Inductance per unit length of a routing layer.

shrinkage Distance that wires on the layer shrinks or expands on

each side from the design to the fabricated chip. Note

that negative numbers indicate expansion and positive

number indicate shrinkage.

default_routing_width Default routing width for wires on the layer.

height Distance from the top of the substrate to the bottom of

the routing layer.

thickness Thickness of the routing layer.

plate_cap Capacitance per unit area when the first layer overlaps

the second layer. This function specifies an array of

values indexed by routing layer order (CP layer, layer).

Variable Description

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adjacent_wire_ratio

Percentage of wiring on the layer that runs adjacent to and has minimum spacing from

wiring on the same layer. This function specifies percentage values of adjacent wiring for

all routing layers. For example, two parallel adjacent wires with the same length would

have an adjacent_wire_ratio of 50 percent.

wire_ratio_x

Percentage of total wiring in the horizontal direction that you estimate to be on each layer.

The function carries an array of floating-point numbers, following the order of routing

layers. That is, there are three floating-point numbers in the array if there are three

routing layers. These numbers should add up to 1.00.

wire_ratio_y

Percentage of total wiring in the vertical direction that you estimate to be on each layer.

The function carries an array of floating-point numbers, following the order of routing

layers. That is, there are three floating point numbers in the array if there are three routing

layers. And these numbers should add up to 1.00.

wire_length_x, wire_length_y

Estimated wire lengths in horizontal and vertical direction for a net.

Equations for Parasitic RC Estimation

Parasitic calculation is based on your estimates of routing topology prior to detail routing.

The following sections describe how to determine those estimates.

Capacitance per Unit Length for a Layer

Use the following equations to estimate capacitance per unit length for a given layer.

cap_per_dist

layer

= W * cap_per_area

layer

+ fringe_cap

layer

coupling_cap_per_dist

layer

where

W = (default_wire_width | actual_wire_width) - shrinkage

cap_per_area

layer

= 1 - SUM_overlap_wire_ratio_under

layer

cap_per_sq

layer

SUM

i=other_layer

[overlap_wire_ratio

j,layer

]

* plate_cap

layer,i

where

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SUM_overlap_wire_ratio_under

layer

SUM

j=layer_underneath

[overlap_wire_ratio

j,layer

]

Note:

This equation represents the sum of all the

overlap_wire_ratio values between the

current layer and each layer underneath the current layer.

coupling_cap_per_dist

layer

2 * adjacent_wire_ratio

layer

* coupling_cap

layer

Resistance and Capacitance for Each Routing Direction

Use the following equations to estimate capacitance and resistance values based on

orientational routing wire ratios.

capacitance x = cap_per_dist x * wire_length_x

capacitance y = cap_per_dist y * wire_length_y

resistance x = res_per_sq x * wire_length x / width x

resistance y = res_per_sq y * wire_length y / width y

where

cap_per_dist x = SUM[wire_ratio_x layer * cap_per_dist layer]

cap_per_dist y = SUM[wire_ratio_y layer * cap_per_dist layer]

res_per_sq x = SUM[ wire_ratio_x layer * res_per_sq layer ]

res_per_sq y = SUM[ wire_ratio_y layer * res_per_sq layer ]

width x = SUM[ wire_ratio_x layer * W layer ]

width y = SUM[ wire_ratio_y layer * W layer ]

.plib Format

To provide layer parasitics for RC estimation based on the equations shown in this section,

define them in the following .plib format.

physical_library(name){

...

resistance_lut_template (template_name

) {

variable_1: routing_width | routing_spacing ;

variable_2: routing_width | routing_spacing ;

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

}

resource(technology) {

field_oxide_thickness : float ;

field_oxide_permitivity : float ;

...

routing_layer(layer_name

) {

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cap_multiplier : float ;

cap_per_sq : float ;

coupling_cap : float ;

default_routing_width : float ;

edgecapacitance : float ;

fringe_cap : float ;

height : float ;

inductance_per_dist : float ;

min_area : float ;

offset : float ;

oxide_permittivity : float ;

oxide_thickness : float ;

pitch : float ;

ranged_spacing(float, ..., float) ;

res_per_sq : float ;

routing_direction : vertical | horizontal ;

shrinkage : float ;

spacing : float ;

thickness : float ;

wire_extension : float ;

lateral_oxide (float, float) ;

resistance_table (template_name

) {

index_1 ("float, float, float, ...") ;

index_2 ("float, float, float, ...") ;

values ("float, float, float, ...") :

}

} /* end routing_layer */

plate_cap(value, value, value, value, value, ...) ;

/* capacitance between wires on lower and upper layer */

/* MUST BE DEFINED BEFORE ANY routing_wire_model GROUP DEFINITION */

/* AND AFTER ALL *_layer() DEFINITIONS */

routing_wire_model(name) {

/* predefined routing wire ratio model for RC estimation */

overlap_wire_ratio(value, value, value, value, value, ...) ;

/* overlapping wiring percentage between wires on different layers. */

/* Value between 0 and 100.0 */

adjacent_wire_ratio(value, value, value, ...) ;

/* Adjacent wire percentage between wires on same layers. */

/* Value between 0.0 and 100.0 */

wire_ratio_x(value, value, value, ...) ;

/* x wiring percentage on each routing layer. */

/* Value between 0.0 and 100.0 */

wire_ratio_y(value, value, value, ...) ;

/* y wiring percentage on each routing layer. */

/* Value between 0.0 and 100.0 */

wire_length_x : float ;

/* estimated length for horizontal wire segment */

wire_length_y : float ;

/* estimated length for vertical wire segment */

}

topological_design_rules() {

...

default_via_generate( ) {

via_routing_layer ( ) {

end_of_line_overhang : ;

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overhang ( ) :

}

via_contact_layer ( ) {

end_of_line_overhang : ;

overhang ( ) :

rectangle(float, float, float, float) ;

resistance : float ;

}

process_resource () {

process_routing_layer () {

res_per_sq : float;

cap_per_sq : float ;

coupling_cap : float ;

/* coupling effect between parallel wires on same layer */

fringe_cap : float ; /* sidewall capacitance per unit length */

edgecapacitance: float ; /* lumped fringe capacitance */

inductance_per_dist : float ;

shrinkage : float ; /* delta width */

default_routing_width : float; /* width */

height : float ; /* height from substrate */

thickness : float ; /* interconnect thickness */

lateral_oxide_thickness : float ;

oxide_thickness : float ;

}

process_via () {

.resistance : float ;

}

process_array () {

default_capacitance : float ;

}

process_wire_rule () {

process_via () {

resistance : float ;

}

macro() {

...

}

The .plib file that contains the wire_ratio model is as follows:

resource (technology) {

routing_wire_model(name) {

overlap_wire_ratio(value, value, value, ...);

adjacent_wire_ratio(value, value, value, ...);

wire_ratio_x(value, value, value, ...);

wire_ratio_y(value, value, value, ...);

wire_length_x : float;

wire_length_y : float;

}